RT9921PQV 查看數據表（PDF） - Richtek Technology

零件编号

产品描述 (功能)

生产厂家

RT9921PQV

Integrated Multi-Channel DC-DC Converter for TFT LCD Panels

Richtek Technology 

RT9921

Preliminary

Ordering Information

RT9921

Package Type

QV : VQFN-24L 4x4 (V-Type)

Operating Temperature Range

P : Pb Free with Commercial Standard

G : Green (Halogen Free with Commer-

cial Standard)

Note :

Richtek Pb-free and Green products are :

`RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

`Suitable for use in SnPb or Pb-free soldering processes.

`100% matte tin (Sn) plating.

Pin Configurations

(TOP VIEW)

24 23 22 21 20 19

LX 1

18 AVDD

VIN 2

17 DRVP

SS 3

AGND 4

AGND

16 FBP

15 VGH

ADJ 5

LDOO 6

14 VGHM

25 13 RE

7 8 9 10 11 12

VQFN-24L 4x4

Typical Application Circuit

VGL

D4

R8

C11

ZD1 C12

640kHz/1.2MHz

VIN

L1

C1

23 FREQ

2

VIN

http://www.DataSheet4U.net/

DRVP

17

LX 1

3 SS

C4

FB 22

11 VDPM

COMP 21

C14

RT9921

C6

C5

D3

D2

C7

C8

D1

VAVDD

R1

C2

R3

R2

R9

C3

R10

VAVDD

18 AVDD

C13

FBP 16

VGH 15

VFLK

VIN

R6

VLDO

RESET

R7

12 VFLK

R14

9 RESET

8 VDIV

10 CD

C10

RE 13 R11

VGHM 14

OPAO 19

OPAI 20

LDOI 7

LDOO 6

ADJ 5

R4

VGHM

VCOM_OUT

VCOM_INT

VIN

VLDO

R5

AGND PGND

C9

4

24

www.richtek.com

2

DS9921-00 November 2007

datasheet pdf - http://www.DataSheet4U.net/

Share Link: