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RT9625B

Description
Dual-Channel Synchronous Rectified MOSFET Driver
Categorylogic    Gate   
File Size192KB,14 Pages
ManufacturerRichtek Technology Corporation
Websitehttps://www.richtek.com/
Download Datasheet Parametric View All

RT9625B Overview

Dual-Channel Synchronous Rectified MOSFET Driver

RT9625B Parametric

Parameter NameAttribute value
StatusActive
Number of Channels2
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
Built-In Bootstrap DiodeYes
Iq (typ)(mA)0.18
FeaturesTri-State Inpu
Package TypeWQFN4x4-16
®
RT9625B
Dual-Channel Synchronous Rectified MOSFET Driver
General Description
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.
Features
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
Applications
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
Marking Information
09 : Product Code
09 YM
DNN
YMDNN : Date Code
Simplified Application Circuit
V
IN
12V
VCC
RT9625B
L1
PHASE1
PWM1
PWM2
PWM1
PWM2
L2
PHASE2
V
OUT
GND
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9625B-02
September 2012
www.richtek.com
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