RT9224E(2001) Ver la hoja de datos (PDF) - Richtek Technology

Número de pieza

componentes Descripción

Fabricante

RT9224E
(Rev.:2001)

VRM 8.5 Synchronous PWM Buck Converter Controller and Output Voltage Monitor

Richtek Technology 

RT9224E

Typical Application Circuit

Preliminary

VIN = 5V

L1

F1

1µH +CIN

5×1000µF

2N6394

2×1µF

10Ω

2K

+12V

0.1µF

0.1µF

SS 3

VSEN 1

RT 20

15V

VCC OVP

18

19

MONITOR AND

PROTECTION

1000pF

OCSET

2

12 PGOOD 1K

OSC

15 BOOT

14 UGATE

Q1

VID25

VID0

VID1

VID2

VID3

4

5

6

7

D/A

8

10

13 PHASE

17 LGATE

16 PGND

11

GND

L2 - 3µH

+VO

D2

COUT

9×1000µF

+

Q2

4.99K

0.68µF

FB

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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6

DS9224E-01 May 2001

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