US3011CW 데이터 시트보기 (PDF) - Unisem

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US3011CW

5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC

Unisem 

BLOCK DIAGRAM

US3011

Enable

V12

UVLO

V5

Vset

D0

Enable

D1

5Bit

DAC,

D2

Ctrl

D3

Logic

D4

OVP

1.18Vset

V12

Vset

Enable

PWM

+

Control

V12

Slope

Comp

Osc

Soft

Start &

Fault

Logic

Enable

Over

Current

200uA

1.1Vset

Vfb

HDrv

LDrv

CS-

CS+

Ct

SS

PGd

Gnd

0.9Vset

3011Ablk1-1.1

Figure 1 - Simplified block diagram of the US3011.

Rev. 1.3

12/8/00

4-5

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