RT9624F Datasheet, PDF (2/13 Pages) Richtek Technology Corporation – Single Phase Synchronous Rectified Buck MOSFET Driver

RT9624F
Pin Configurations
(TOP VIEW)
PWM 1
GND 2
NC 3
VCC ⁴
8 _BOOT
7 UGATE
6 PHASE
9 5 LGATE
WDFN-8L 3x3
Function Pin Description
Pin No.
Pin Name
Pin Function
1
PWM
PWM Signal Input. Connect this pin to the PWM output of the controller.
2,
9 (Exposed Pad)
GND
Ground. The exposed pad must be soldered to a large PCB and connected to
GND for maximum power dissipation.
3
NC
No Internal Connection.
4
VCC
Supply Voltage Input.
5
LGATE
Low-Side Gate Driver Output. Connect this pin to the Gate of low-side power
N-MOSFET.
6
PHASE
Connect this pin to the Source of the high-side N-MOSFET and the Drain of the
low-side N-MOSFET.
7
UGATE
High-Side Gate Drive Output. Connect this pin to the Gate of high-side power
N-MOSFET.
8
BOOT
Bootstrap Supply for High-Side Gate Drive.
Function Block Diagram
VCC
Internal
VDD
POR
PWM
Tri-State
Detect
Bootstrap
Control
Shoot-Through
Protection
Turn Off
Detection
Shoot-Through
Protection
VCC
BOOT
UGATE
PHASE
LGATE
GND
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2
is a registered trademark of Richtek Technology Corporation.
DS9624F-02 July 2015