US3007 Ver la hoja de datos (PDF) - Unisem

Número de pieza

componentes Descripción

Lista de partido

US3007

5 BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS NON SYNCHRONOUS , LDO CONTROLLER AND 200MmA LDO ON BOARD

Unisem 

US3007

BLOCK DIAGRAM

V12 28

V5 11

VID0 7

VID1 6

VID2 5

VID3 4

VID4 3

Vsen1 22

Fb3 19

Gate3 18

Vsen2 15

Enable

UVLO

Vset

5Bit

DAC

V12

1.26V

V5

Vout4 16

Fb4 14

PGood 8

4.3V

1.17Vset

2.5V

1.1Vset

0.9Vset

0.9V

Over

Voltage

Vset

+

Slope

Comp

Enable

PWM

Control

Osc

Enable

Soft

Start &

Fault

Logic

Over

Current

200uA

Slope

Comp

+

2.0V

PWM

Control

Enable

21 Fb1

V12

27 UGate1

V12

25 LGate1

26 Phase1

23 OCSet1

2 Phase2

9 OCSet2

13 Fault / Rt

V12

1 UGate2

24 PGnd

17 Gnd

10 Fb2

12 SS

3007blk1-1.4

Figure 1 - Simplified block diagram of the US3007

4-6

Rev. 1.8

12/8/00

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