RT9238 Просмотр технического описания (PDF) - Richtek Technology

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RT9238

VRM8.5 PWM and Triple Linear Power System Controller

Richtek Technology 

RT9238

Preliminary

Ordering Information

RT9238… …

Package type

S : SOP-28

Operating temperature range

C: Commercial standard

Typical Application Circuit

L1

5V

R1

1µH

+ C1

12V

2000µF

10

VAUX

VTT

VOUT2

1.2V

VTTPG

Q3

PHD3055E

+ C5

R6

1000µF

1K

AGP

VOUT3

1.5V

MCH

1V.O8UVT4

Q4

PHD3055E

+ C9

560µF

C8

1µF

Q5

2SD1802

+ C11

C10

560µF 1µF

C14

Z1

1µF

15V

28

VCC

FIX

2 FIX

23

OCSET1

PGOOD 8

UGATE1 27

1 DRIVE2 PHASE1 26

11 VSEN2 LGATE1 25

C6

1µF

RT9238

PGND

24

9 VTTPG

FB1 22

16 VAUX

VDAC 21

+ C15

10µF

ICOMP 20

18 DRIVE3

VID25

7

6

19

15

14

VSEN3

VID0

VID1

VID2

VID3

FAULT/VID4

5

4

3

10

DRIVE4

SS24 12

VSEN4

SS13 13

GND

17

C2

1000pF

R2

1K

Q1

PHB83N03LT

L2; 1.8µH

Q2

PHB95N03LT

R6

1K

VID25

VID0

VID1

VID2

VID3

FAULT

C16

10nF

C12

0.1µF

C13

0.1µF

PGOOD

R3

10K

+ C3

8000µF

VCORE VOUT1

C4 VRM8.5

1µF

C17

1µF

* C17 near the FB1 pin

as close as possible

Fig.1 VRM 8.5 Power Solution

www.richtek-ic.com.tw

2

DS9238-01 July 2001

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