Rainbow Electronics MAX1538 - Manual (Page 13)

MAX1538
Power-Source Selector for
Dual-Battery Systems
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ACDET
AIRDET
V DD
GND
ADPIN
LDO
REF
BATSUP
2V
MINVA
BATA
R
4R
0.4V
MINVB
BATB
R
4R
0.4V
BATSEL
RELRN
CHRG
ADPIN
ADPPWR
EXTLD
REVBLK
CHGIN
DISBAT
ADPBLK
CHGA
CHGB
BATA
DISA
BATB
DISB
OUT1
OUT2
OUT0
STATE
MACHINE
R
S Q
BATTERY B
UNDERVOLTAGE
LATCH
MAX1538
N N N
Q
R
S Q
BATTERY A
UNDERVOLTAGE
LATCH
Q
Figure 3. Functional Diagram