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MB3891
5
■
■■
■
BLOCK DIAGRAM
14
16
53
54
55
44
22
33
20
8 9 10 11
12
13
17
18
19
15
+
−
6
7
46
45
52
51
48
60
61
42
43
62
3
5
4
47
40
41
39
21
34
35
36
37
38
27
28
26
CONT1
CONT6
CONT2
SW1-ON
SW2-ON
SW3-ON
CONT4
VREF
RESET-IN
CLK-IN
µP-IO
RST
CLK
SIM-IO
VSIM-ON
SIMPROG
OSC
VBAT2 VBAT1
OUT1
OUT2
SW1-INPUT
SW1-OUTPUT
SW2-INPUT
SW2-OUTPUT
SW3-INPUT
SW3-OUTPUT
VBAT3
OUT3
GND3
VBAT4
OUT4
GND4
V-BACKUP
XPOWERGOOD
DELAYCAP
GND1
POR
Main
UVLO
Over
Temp
Protection
LDO1
LDO2
SW1
SW2
SW3
ON
OUT
ON
OUT
ON
OUT
LDO3
ON
OUT
LDO4
ON
OUT
LDO5
ON
OUT
LDO6
CONT4
BACKUP
UVLO
VREF
VREF-AMP
GSM/SIM
Logic
Level
Translation
VSIMOUT
Charge-pump
57
CONT5
56
CONT3
31
VCAP−
30
VCAP+
59
GND5
58
OUT5
24
REF-OUT
23
VFIL
25
VCC-VSIM
29
VSIMOUT
32
GND-VSIM
N.C.
Pin : 1, 2, 49, 50, 63, 64