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The RT6220DH is a synchronous Buck converter with Advanced Constant On-Time (ACOT®) mode control, which provides a very fast transient response with no external compensators. The RT6220DH operates from 4.5V to 23V input voltage, provides complete protection functions including Over Current Protection (OCP), Under Voltage Protection (UVP) and Over Voltage Protection (OVP). This IC also provides a 1.5ms internal soft-start function and an open-drain power good indicator.

Applications

  • Laptop Computers
  • Tablet PCs
  • Networking Systems
  • Servers
  • Personal Video Recorders
  • Flat Panel Television and Monitors
  • Distributed Power Systems
Key Spec.
RT6220D
Status Active
Vin (min) (V) 4.5
Vin (max) (V) 23
Number of Outputs 1
Vout (min) (V) 0.6
Vout (max) (V) 5
Output Adj. Method Resistor
Iout (max) (A) 6
Current Limit (typ) (A) 9.5
Freq (typ) (kHz) 500
Ext Sync No
Ron_HS (typ) (mOhm) 31
Ron_LS (typ) (mOhm) 20
Iq (typ) (mA) 0.11
Features ACOT Control;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Force PWM;Internal Compensation;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP
Package Type UQFN3x3-16(FC)
Features
  • 4.5V to 23V Input Voltage Range
  • Adjustable from 0.6V to 5V Output Range
  • 500kHz Switching Frequency
  • ACOTTM Mode Performs Fast Transient Response
  • Integrated MOSFETs
    ► 31mΩ of High-Side MOSFET
    ► 20mΩ of Low-Side MOSFET
  • Supports MLCC Output Capacitors
  • Internal Soft-Start (1.5ms typ)
  • Built-in OVP/UVP/OCP
  • Power Good Indicator
  • Thermal Shutdown
Datasheet
TitleVersionLast UpdateDownload
RT6220DH: 6A, 23V, 500kHz, ACOTTM Synchronous Buck ConverterInitial Release2017/10/05
Technical Documents
TitleItem TypeLast UpdateDownload
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
RT6220DHGQUFUQFN3x3-16(FC)1,500 Request Digikey 1,418 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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