RT9224CPS Ver la hoja de datos (PDF) - Richtek Technology

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RT9224CPS

VRM 9.0 Synchronous PWM Buck Converter Controller and Output Voltage Monitor

Richtek Technology 

RT9224C

Typical Application Circuit

Preliminary

VIN = 5V

L1

1uH

F1

CIN

5 x1000uF

2N6394

2K

2 x1uF

10

+12V

0.1uF

15V

0.1uF

SS 3

VSEN 1

VCC

18

OVP

19

Monitor

and

Protection

1000pF

2 OCSET 1K

12 PGOOD

OSC

VID0

VID1

VID2

VID3

VID4

4

5

6

7

D/A

8

-

-

FB 10

+

+

15 BOOT

14 UGATE

Q1

13 PHASE

L2

3uH

+VO

17 LGATE

Q2

D2

COUT

9 x1000uF

4.99K

16 PGND

GND

0.68uF

750K

Component Selection Notes:

COUT, CIN − Each 1000µF 6.3WV DC, Sanyo MV-GX or Equivalent.

L2 − Core: Micrometals T50-52B; Winding: 10 Turns of 16AWG.

L1 − Core: Micrometals T50-52; Winding: 5 Turns of 18AWG.

D2 − 3A, 40V Schottky, Motorola MBR340 or Equivalent.

Q1, Q2 − PHB83N03LT; PHB95N03LT

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2

DS9224C-02 March 2004

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