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The RT6219 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 RT6219 operates from 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.
RT6219A RT6219B
Status Active Active
Vin (min) (V) 5 5
Vin (max) (V) 23 23
Number of Outputs 1 1
Vout (min) (V) 0.6 0.6
Vout (max) (V) 5 5
Output Adj. Method Resistor Resistor
Iout (max) (A) 4 4
Current Limit (typ) (A) 6 6
Freq (typ) (kHz) 500 500
Ext Sync No No
Ron_HS (typ) (mOhm) 67 67
Ron_LS (typ) (mOhm) 41 41
Iq (typ) (mA) 0.1 0.11
Features ACOT Control;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;Internal Compensation;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP ACOT Control;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;Force PWM;Internal Compensation;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP
Package Type WDFN3x3-10 WDFN3x3-10
Features
  • 5V to 23V Input Voltage Range
  • Adjustable from 0.6V to 5V Output Range
  • Up to 98% Duty for 2S Battery Application
  • 500kHz Switching Frequency
  • ACOT® Mode Performs Fast Transient Response
  • Integrated MOSFETs
    ► 67mΩ of High-Side MOSFET
    ► 41mΩ of Low-Side MOSFET
  • Supports MLCC Output Capacitors
  • Internal Soft-Start (1.5ms typ)
  • Built-in OVP/UVP/OCP
  • Power Good Indicator
  • Thermal Shutdown
Reference Design
TitleLast UpdateDownload
Richtek Load Transient Tool2022/07/25
Part NumberPackage TypePackage Qty.Free SampleDistributorStockBuy From Authorized Distributor
RT6219AGQWWDFN3x3-101,500 Request Digikey 2,806 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT6219AHGQWWDFN3x3-101,500 Request Digikey 1,363 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT6219BLGQWWDFN3x3-101,500 Request Digikey 251 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
Evaluation Board
Part NumberDistributorStockBuy From Authorized Distributor
EVB_RT6219AGQW Digikey Lead-Time: 14 weeks Not Available
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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