双电池方案_FSC dual battery solutio...

Dual Battery SCH V41

2

3

4

A

A

Q1 DC 5V 500mA Charge 4 in Charge in

FDFMA2P853 3 1 6 R7 0.4 5

Q2 1

FDMA1023 6 3 4 Aux_Batt C2 10pF GND Aux_Batt

2

Charge SW B I_sense Bat_sws

Charge SW R6 Q5 FJY4002R
10K

LPWR

5

Charge in

Aux_Batt

Main_Batt D1 BAS40SL D2 BAS40SL D3

LPWR

100K

R1 0

B

10K

R2 0 Batt_Select Batt_Select R5 100K R3 0

L --- Aux_Batt charge
BAS40SL

H --- Main_Batt Charge
Q4 FJY3002R GND C 5

GND

C1 0.22uF 2 GND 4 3 Q3 FDMA1023 GND 6 1 Main_Batt C3 10pF Main_Batt

C

D

Title Size A Date: File: 1 2 3

Dual Battery Charge Switch Schematics
Number

D

Fairchild Semiconductor

Revision V4.0

2007-12-5 Sheet of C:\Documents and Settings\..\dual battery V4.0.SchDoc Drawn By: 4

1

2

3

4

R24 2.8V 47K Q6 A B+ B+ C4 220uF C5 220uF 1 FDMA1023 6 3 4 C6 10pF Close to Q6 GND GND GND LP