Dual-Channel Synchronous Rectified MOSFET Driver


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The RT9625B is a high frequency, synchronous rectified, two phase MOSFET driver designed for normal MOSFET driving applications and high performance CPU VR driving capabilities.
The RT9625B can be supplied from 4.5V to 13.2V. The applicable power stage VIN range is from 5V to 23V. The RT9625B also builds in internal power switches to replace external bootstrap diodes.
The RT9625B can support switching frequency efficiently up to 500kHz. The RT9625B has the UGATE and LGATE driving circuits for synchronous rectified DC/DC converter applications. The shoot through protection mechanism is designed to prevent shoot through between high side and low side power MOSFETs. The RT9625B has tri-state PWM input with shutdown function, which can force driver to output low UGATE and LGATE signals.
The RT9625 comes in a small footprint with WQFN-16L 4x4 package.


  • Core Voltage Supplies for Desktop, Motherboard CPU
  • High Frequency Low Profile DC/DC Converters
  • High Current Low Voltage DC/DC Converters
  • Core Voltage Supplies for GFX Card
  • Motherboards
Key Spec.
Status Active
Number of Channels 2
Vcc (typ) (V) 12
UGATE Rise Time (typ) (ns) 25
UGATE Fall Time (typ) (ns) 12
LGATE Rise Time (typ) (ns) 24
LGATE Fall Time (typ) (ns) 10
UGATE Source Resistance (typ) (Ohm) 1.7
UGATE Sink Resistance (typ) (Ohm) 1.4
LGATE Source Resistance (typ) (Ohm) 1.6
LGATE Sink Resistance (typ) (Ohm) 1.1
Disable Pin No
Built-In Bootstrap Diode Yes
Iq (typ) (mA) 0.18
Features Tri-State Input
Package Type WQFN4x4-16
  • Drive Four N-MOSFETs for Two-Phase PWM Control
  • Shoot Through Protection
  • Embedded Bootstrap Diode
  • Support High Switching Frequency
  • Fast Output Rising Time
  • Tri-State PWM Input for Output Shutdown
  • Small 16-Lead WQFN Package
  • RoHS Compliant and Halogen Free
TitleLast UpdateShareDownload
Dual-Channel Synchronous Rectified MOSFET Driver2012/05/11
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT9625BZQWWQFN4x4-161500 Not available Buy from Distributor