RT8223NZQW 查看數據表（PDF） - Richtek Technology

零件编号

产品描述 (功能)

生产厂家

RT8223NZQW

High Efficiency, Main Power Supply Controller for Notebook Computer

Richtek Technology 

RT8223N

Pin No.

21

Pin Name

UGATE1

22

BOOT1

23

PGOOD

24

VOUT1

15,25

(Exposed Pad)

GND

Pin Function

Upper Gate Driver Output for SMPS1. UGATE1 swings between PHASE1 and

BOOT1.

Boost Flying Capacitor Connection for SMPS1. Connect to an external capacitor

according to the typical application circuits.

Power Good Output for Channel 1 and Channel 2. (Logical AND).

Bypass Pin for SMPS1. Connect to the SMPS1 output to bypass efficient power

for VREG5 pin. VOUT1 is also for the SMPS1 output soft-discharge.

Ground for SMPS Controller. The exposed pad must be soldered to a large PCB

and connected to GND for maximum power dissipation.

Function Block Diagram

BOOT1

UGATE1

PHASE1

LGATE1

FB1

ENTRIP1

TONSEL SKIPSEL

VREG5

VREG5

SMPS1

PWM Buck

Controller

10µA

VREG5

SMPS2

PWM Buck

Controller VREG5

10µA

EN

ENC

VOUT1

Power-On

Sequence

Clear Fault Latch

SW5 Threshold

Thermal

Shutdown

SW3 Threshold

VREG5

VIN

VREG5

REF

VREG3

BOOT2

UGATE2

PHASE2

LGATE2

VOUT2

FB2

ENTRIP2

PGOOD

GND

VREG3

REF

www.richtek.com

4

DS8223N-03 April 2011

Share Link: