SP6645 查看數據表（PDF） - Signal Processing Technologies

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SP6645

Single/Dual Alkaline Cell, High Efficiency Boost DC-DC Regulator

Signal Processing Technologies 

SCHEMATIC WITH LDO COMBINATION

0.88V to 3.3V Input

VBATT

GND

+ C1

47µF

L1 22µH

1

J1 2

3

BATTLO

SHDN

R4 1M

1 VBATT

2

BATTLO SP6644

3 RLIM

U1

4 SHDN

VOUT 8

LX 7

GND 6

FB 5

R3

2.5k

LX

+3.3V

VOUT

+

R1

Open

C2

47µF

GND

1 VIN

VOUT 5

2 GND SP6201

3 ENABLE RESET_N 4

+3.0V

VOUT

C3

1µF

R2

100k

Probe access points for external connection by the user

Figure 29. Schematic SP6644/6201 DC/DC LDO Combination

Date: 11/30/04

SP6644/6645 High Efficiency Boost Regulator

13

© Copyright 2004 Sipex Corporation

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