RT9223 Просмотр технического описания (PDF) - Richtek Technology

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RT9223

5-Bit Programmable Synchronous PWM Buck Converter Controller

Richtek Technology 

RT9223

Pin Description

Pin No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Pin Name

GND

VCC

OVP

PGOOD (1)

CSN

CSP

PGNDH

DH

NC

PGNDL

DL

BSTL

BSTH

SHDN (1)

VSEN

VID4 (1)

VID3 (1)

VID2 (1)

VID1 (1)

VID0 (1)

Pin Function

Small signal analog and digital ground

Power supply input

High signal out if VO > setting point +20%

Open collector logic output; High if VO within 10% of the setting point

Current sense input (Negative)

Current sense input (Positive)

High side drive GIND

High side driver output

No connection

Low side drive GND

Low side driver output

Supply for low side driver

Supply for high side driver

Logic low shutdown the converter

Top end of internal feedback chain

Programming input (MSB)

Programming input

Programming input

Programming input

Programming input (LSB)

Note: (1) All logic level inputs and outputs are TTL compatible.

www.richtek-ic.com.tw

4

DS9223-07 May 2001

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