Richtek Wide Input Voltage Range DC/DC Power Solutions for Industrial, Automotive and LED lighting applications
Introduction
Richtek provides comprehensive power conversion solutions for input voltages ranging from 1.4V up to 80V, suitable for a wide range of applications in the industrial, automotive, and professional lighting field.
The selected product range in this brochure highlights Richtek linear and switching converters, from low quiescent LDOs to highly efficient step-up and step down converters and controllers, LED lighting drivers, Power Switches and DDR terminators.
· Many parts come with extra features such as PGOOD signaling and programmable Soft-Start.
· Richtek Buck converters use robust control architectures like ACOT® which is compensation free and simple to use.
· The listed parts have thermally enhanced packages, allowing higher ambient temperature operation.
· Richtek also offers both 3T parts (qualified over the full -40°C ~ 85°C industrial temperature range) and Automotive AEC-Q100 qualified parts.
· All parts can be used with ceramic input and output capacitors which extends operation life time.
These features make the Richtek parts extremely suitable for demanding applications fields such as:
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Industrial
· eMetering
· Embedded Computing
· Industrial control systems
· Portable equipment
· Instrumentation
· Surveillance Cameras
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Automotive
· Infotainment
· USB power
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Communications
· Networking
· Servers
· Data storage
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Professional LED Lighting
· Car lighting
· Street Lighting
· Display lighting
· Lighting controls
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Power conversion IC Portfolio for Industrial, Automotive and LED lighting applications
Step down converters and LDOs
1.4V~6V VIN, up to 4A, Buck converters/LDOs
Ideal for Li-ion battery powered applications, 5V input power rails and intermediate power conversions.
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P/N
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Description
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IOUT
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VIN
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VOUT
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fSW
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Key Features
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Package
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RT2657BQ
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Synchronous
Buck converter
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0.6A
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2.7V~5.5V
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0.6V~5.5V
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2.25MHz
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· AEC-Q100 Compliance
· Built-in Soft-Start
· 1.5A Current limit peak
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WDFN-8L 3x3
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RT5712A
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2A
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2.7V~5.5V
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0.6V~3.4V
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1MHz
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· RON 100mΩ HS / 70mΩ LS
· 1.2ms fixed Soft-Start
· CMCOT topology: good transient response, stable with MLCC
· Hiccup or Latch off UVP
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WDFN-6L-2x2
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RT8079
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3A
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2.95V~6V
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VREF: 0.827V
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300kHz~2MHz
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· RON 45mΩ HS / 45mΩ LS
· Power Good
· Adjustable Soft-Start
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WQFN-16L-3x3
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RT8086B
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3.5A
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2.8V~5.5V
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0.6V~3.3V
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1.2MHz
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· RON 50mΩ HS / 40mΩ LS
· CMCOT topology: good transient response, stable with MLCC
· Power Good
· Built-in Soft-Start
· Hiccup UVP
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UQFN-12L-2x2 (FC)
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RT8074
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4A
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2.7V~5.5V
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0.8V~5V
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200kHz~2MHz
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· Built-in Soft-Start
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PSOP-8
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P/N
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Description
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IOUT
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VIN
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VOUT
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VDropout
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Key Features
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Package
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RT2517B
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LDO
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1A
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2.2V~6V
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1.2V~VIN
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200mV@1A
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· AEC-Q100 Compliance
· Low Quiescent 1.5µA in Shutdown Mode
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PSOP-8
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RT2517C
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1A
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2.2V~6V
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1.2V~VIN
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150mV@1A
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· 3T Grade
· Low Quiescent 0.1µA in Shutdown Mode
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VDFN-8AL-3x3
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RT2518
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LDO with EN
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1A
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1.4V~6V
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0.5V~VIN
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200mV@1A
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· 3T Grade
· EN control
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WDFN-8L-3x3
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RT2515H
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2A
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1.4V~6V
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0.5V~VIN
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400mV@2A
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· 3T Grade
· EN control
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PSOP-8
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4V~18V VIN, up to 6A Buck converters
Ideal for applications powered from 5V~12V power rails, intermediate power conversions, etc.
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P/N
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Description
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IOUT
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VIN
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VOUT
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fSW
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Key Features
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Package
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RT8297B
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Current Mode Synchronous Buck converter
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1.5A
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4V~17V
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0.8V~12V
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800kHz
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· Power Good
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WDFN-8L-2x2
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RT6232/33/A/B
A:PSM
B:PWM
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ACOT® Synchronous
Buck converter
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2A/3A
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4.5V~18V
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0.765V~8V
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500kHz
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· ACOT® topology for ultra-fast transient response and MLCC COUT stable
· Adjustable Soft-Start
· Power Good
· Force PWM or PSM (enhanced light load efficiency)
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WDFN-8L-2x3
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RT7275/76
75:PWM
76:PSM
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3A
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700kHz
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WDFN-10L-3x3
PTSSOP-14
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RT7231/32
31:PWM
32:PSM
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4A
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650kHz
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WDFN-10L-3x3
PTSSOP-14
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RT6206B
PSM
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5.5A
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650kHz
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WDFN-10L-3x3
PSOP-8
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RT2859A/B
A:PSM
B:PWM
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ACOT® Synchronous
Buck converter
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3A
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4.5V~18V
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0.765V~7V
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650kHz
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· 3T Grade
· ACOT® topology for ultra-fast transient response and MLCC COUT stable
· Adjustable Soft-Start
· Power Good
· Hiccup or Latch off UVP
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WDFN-16L-3x3
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RT2855A/B
A:PSM
B:PWM
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4A
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650kHz
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WDFN-16L-3x3
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RT2856
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Current Mode Synchronous Buck converter
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6A
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4.5V~18V
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VREF: 0.8V
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200kHz~1.6MHz
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· 3T Grade
· RON 26mΩ HS / 19mΩ LS
· Adjustable Soft-Start
· Power Good
· VREF:0.8V ±1% over -40°C ~ 85°C
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WQFN-14AL-3.5x3.5
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3V~24V VIN, up to 8A Buck converters
Ideal for applications powered from 12V system power rails requiring extra input voltage de-rating
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P/N
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Description
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IOUT
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VIN
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VOUT
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fSW
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Key Features
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Package
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RT7262/63/64
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Current Mode Synchronous Buck converter
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2A/3A/4A
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4.5V~21V
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0.808V~15V
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500kHz
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· Synchronized external clock from 300kHz~2MHz
· Adjustable Soft-Start
· Low LS RON ideal for low VOUT
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WDFN-14L-4x3
PSOP-8
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RT8299
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3A
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3V~24V
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0.8V~15V
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500kHz
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· Power Good and very wide VIN range
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WDFN-10L-3x3
PSOP-8
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RT6220
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ACOT® Synchronous
Buck converter
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6A
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4.5V~23V
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0.6V~5V
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500kHz
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· ACOT® topology for ultra-fast transient response and MLCC COUT stable
· RON 31mΩ HS / 20mΩ LS
· Power Good
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UQFN-16L-3x3(FC)
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RT7238
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ACOT® Synchronous
Buck converterwith 3.3V/5V LDO
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8A
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8V~23V
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0.9V~5V Adj.
3.35V fixed
5.0V fixed
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500kHz
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· ACOT® topology for ultra-fast transient response and MLCC COUT stable
· RON 27mΩ HS / 10mΩ LS
· With fixed 70mA 3.3V/5V LDO
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UQFN-10L-3x3(FC)
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Also see:
Application note ‘’Buck converter selection criteria’’
Application note "Comparing Buck converter topologies–Current mode, CMCOT™ and ACOT®"
3.5V~36V VIN, up to 0.6A Buck converters/ low quiescent LDOs
Ideal for applications from 24V rails, for powering low power MCUs in e-metering, lighting controls, sensors, etc.
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P/N
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Description
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IOUT
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VIN
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VOUT
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fSW
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Key Features
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Package
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RT6208
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Buck converter
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0.1A
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4.5V~36V
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Adj.VOUT
VREF = 0.8V
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Hysteretic mode operation using Boundary conduction mode
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· Synchronous
· Adjustable current limit
· 25µA IQ
· Very high efficiency at low load
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SOT-23-6
PSOP-8(w/PG)
SOT-23-8(w/PG)
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RT6200
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0.6A
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4.5V~36V
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0.8V~15V± 2%
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1.2MHz
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· Asynchronous with internal 0.3Ω HS MOSFET
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SOT-23-6
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P/N
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Description
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IOUT
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VIN
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VOUT
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VDropout
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Key Features
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Package
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RT9058
RT2560Q
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LDO
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100mA
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3.5V~36V
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2.5V,3.3V,5V,12V fixed
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550mV@10mA
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· AEC-Q100 Grade(RT2560Q)
· 2µA ultra low IQ
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SOT-23-3
SOT-89
PSOP-8
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Application note “How to power small MCU’s from industrial supply rails”
4.5V~36V VIN, up to 5A Buck converters
Ideal for applications from 24V power rails, such as USB supply, displays, medium power MCUs, Instrumentation, etc.
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P/N
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Description
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IOUT
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VIN
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VOUT
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fSW
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Key Features
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Package
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RT7272A
RT7272B
(PWM/PSM)
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Current Mode
Buck converter
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3A
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4.5V~36V
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0.8V~30V
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500kHz
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· Adjustable current limit: 2.5A~5.5A
· Integrated 150/80mΩ HS/LS MOSFET
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PSOP-8
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RT2872
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3A
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4.5V~36V
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0.8V~30V
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300kHz~1MHz
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· AEC-Q100 Grade 3
· 105/80mΩ HS/LS MOSFET
· Ext.compensation
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PSOP-8
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RT2875A/B
(latch UV/hiccup UV)
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3A
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4.5V~36V
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0.6V~24V
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300kHz~2.1MHz
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· AEC-Q100 Grade 2
· 95/70mΩ HS/LS MOSFET
· Ext.compensation
· Adjustable current limit:1.5A~6A
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PTSSOP-14
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RT8289
RT8279
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5A
peak
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5.5V~32V
5.5V~36V
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1.222V~26V
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500kHz
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· Asynchronous with integrated 100mΩ HS MOSFET
· Internal compensation & Soft-Start
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PSOP-8
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RT2805A
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5A
peak
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5.5V~36V
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1.222V~26V
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500kHz
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· 3T Grade
· Asynchronous with integrated 110mΩ HS MOSFET
· Internal compensation & Soft-Start
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PSOP-8
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4.5V~80V VIN, up to 230mA. High voltage LDOs
Ideal for applications from highly fluctuating power rails (±60/±80V) such as automotive battery powered applications, for powering sensors, low power MCUs, etc.
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P/N
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Description
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IOUT
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VIN
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VOUT
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VDropout
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Key Features
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Package
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RT2571
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LDO
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50mA
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4.5V~60V
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2.5V,3.3V,5V Fixed
1.25-60V Adj.
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250mV@50mA
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· 30µA low IQ
· -60V reverse protection
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PSOP-8, PMSOP-8,
SOT-223
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RT9074
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100mA
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4.5V~60V
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2.5V,3.3V,5V Fixed
1.25-60V Adj.
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300mV@100mA
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· 30µA low IQ
· -60V reverse protection
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PSOP-8, PMSOP-8,
SOT-223
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RT9068
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230mA
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4.5V~60V
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2.5V,3.3V,5V fixed
1.25V~60V Adj.
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230mV@50mA
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· 30µA low IQ
· -60V reverse protection
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PSOP-8, PMSOP-8,
SOT-223
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RT9072A/B
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20mA
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4.5V~80V
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1.25V~60V Adj.
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180mV@20mA
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· 23µA low IQ
· -80V reverse protection
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SOT-23-5,
WDFN-8L 3x3
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Step up controller for high power Boost applications
4.5V~29V VIN, Boost controller
Ideal for applications in high boost power, such as 24V to 48V conversion, large display backlighting, thermal printers, battery pack charging, etc.
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P/N
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Description
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IOUT
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VIN
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VOUT
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fSW
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Key Features
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Package
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RT8525
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Boost controller
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Limited by ext.MOSFET
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4.5V~29V
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Limited by MOSFET
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50K-600kHz
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· Programmable Soft-Start Time
· Programmable Boost SW Frequency
· Fault signaling pin
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SOP-14
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LED Drivers
4.5V~50V VIN, Constant Current Buck converters
Ideal for medium power industrial LED lighting applications.
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P/N
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Description
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IOUT
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VIN
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Key Features
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Where to use, (application examples)
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Package
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RT8471
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Hysteretic control, high brightness LED driver
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1/1.2A
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7V~36V
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· Simple application: no COUT needed
· Analog or digital dimming control
· Ultra-fast response
· Colour control for single string
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· LED strips, signage, < 15W
· MR-16 ≤ 4WSingle string buck with color control via LED shunt dimming
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TSOT-23-5
PMSOP-8
PSOP-8
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RT8474
RT8474A
(A:OVP for hot swap function)
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50V high voltage LED driver
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2A
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4.5V~50V
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· Analog or digital dimming control
· Low RON
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· LED strips, signage, LED engines, POUT< 30W
· RT8474A with special open string protection is ideal for hot-swap LED string
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PSOP-8
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4.5V~150V VIN, Constant Current Buck / Boost / Buck-Boost controllers
Ideal for industrial/automotive LED lighting applications, such as high power LED string applications, street lighting, display backlight.
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P/N
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Description
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IOUT
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VIN
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VLED
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Key Features
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Where to use
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Package
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RT8477A
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Buck / Boost controller
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Limited by external MOSFET
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4.5V~50V
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up to 50V
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· low component count
· Analog or PWM Dimming control
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· Wide input / output range with medium power: LED modules, down-light, emergency lighting
· Buck ≤ 60W, Boost ≤ 40W
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PSOP-8
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RT8475/
RT8494
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LED Driver Controller for Buck, Boost or Buck-Boost Topology
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4.5V~36V
(IC VIN)
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up to 90V
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· Programmable FSW 100kHzto 1MHz
· Analog or Digital to Analog Dimming control
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· Industrial Display Backlight
· AEC-Q100 Compliance (RT8494)
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SOP-14,
WQFN-16L 3x3
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RT8485
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LED Driver controller for
Buck/Boost/Buck-Boost topologies
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4.5V~36V
(IC VIN)
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up to 150V
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· Programmable switching frequency
· Analog, Digital or Digital to Analog Dimming control
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· Street lighting
· High power, high LED string application
· Buck ≤ 100W, Boost ≤ 80W
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SOP-14
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Power Switch and DDR termination regulator
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P/N
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Description
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IOUT
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VIN
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Key Features
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Package
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RT2528
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Power Switch with adj.ILIM
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0.5A~2.5A
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2.5V~5.5V
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· AEC-Q100 Grade 3
· Adjustable current limit: 0.5A~2.5A via an ext. resistance
· 120mΩ P-MOSFET
· Built-in Soft-Start
· Low supply current:120µA
· Reverse input-out voltage
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PSOP-8
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RT2526Q
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DDR Termination regulator
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DDRII/III:2A
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VIN:3.1V~3.6V
VLDOIN:1.2V~1.8V
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· 3T Grade
· S3, S5 off modes
· MLCC stable
· Remote sense
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PSOP-8
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