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The RT8290A is a high efficiency synchronous step-down DC/DC converter that can deliver up to 3A output current from 4.5V to 23V input supply. The RT8290A's current mode architecture and external compensation allow the transient response to be optimized over a wide range of loads and output capacitors. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. The RT8290A also provides output under voltage protection and thermal shutdown protection. The low current (<3μA) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems. The RT8290A is awailable in an SOP-8 (Exposed Pad) package.

Applications

  • Industrial and Commercial Low Power Systems
  • Computer Peripherals
  • LCD Monitors and TVs
  • Green Electronics/Appliances
  • Point of Load Regulation of High-Performance DSPs, FPGAs and ASICs.
Key Spec.
RT8290A
Status Active
Vin (min) (V) 4.5
Vin (max) (V) 23
Number of Outputs 1
Vout (min) (V) 0.925
Vout (max) (V) 20
Output Adj. Method Resistor
Iout (max) (A) 3
Current Limit (typ) (A) 5.1
Freq (typ) (kHz) 340
Freq (min) (kHz) 300
Freq (max) (kHz) 380
Ext Sync No
Ron_HS (typ) (mOhm) 100
Ron_LS (typ) (mOhm) 85
Iq (typ) (mA) 0.8
Features Adjustable Soft-Start;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;OCP;OTP;PSM;Stable with Ceramic Capacitor;UVP
Package Type PSOP-8
Features
  • 4.5V to 23V Input Voltage Range
  • 1.5% High Accuracy Feedback Voltage
  • 3A Output Current
  • Integrated N-MOSFET Switches
  • Current Mode Control
  • Fixed Frequency Operation : 340kHz
  • Output Adjustable from 0.925V to 20V
  • Up to 95% Efficiency
  • Programmable Soft-Start
  • Stable with Low-ESR Ceramic Output Capacitors
  • Cycle-by-Cycle Over Current Protection
  • Input Under Voltage Lockout
  • Output Under Voltage Protection
  • Thermal Shutdown Protection
  • PSM / PWM Auto-Switched
  • Thermally Enhanced SOP-8 (Exposed Pad) Package
  • RoHS Compliant and Halogen Free
Technical Documents
TitleItem TypeLast UpdateDownload
Richtek Product Selection Guide [Jan., 2024] Selection Guide2024/01/18
Richtek Featured Product Tree [Aug., 2023] Selection Guide2023/08/07
Reference Design
TitleLast UpdateDownload
Richtek Load Transient Tool2022/07/25
Part NumberPackage TypePackage Qty.Free SampleDistributorStockBuy From Authorized Distributor
RT8290AGSPPSOP-82,500 Request Digikey 2,220 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
Please confirm with our distributor or sales representative for actual stock status.
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