STM1403
Figure 4. Block Diagram
V
V
CC
OUT
(1,2)
BAT54J
COMPARE
COMPARE
V
V
SO
(1)
V
V
CCSW
(3)
BAT
V
INT
RST
t
rec
Generator
RST
MR
PFI
(3)
V
V
COMPARE
PFO
PFI
COMPARE @
POWER-UP
(3)
BLD
DET
(4)
V
TPU
(4)
1.237V V
REF
Generator
V
REF
V
COMPARE
HV
V
COMPARE
LV
TP (NH)
1
TP (NL)
2
(3)
SAL
TP (NH)
3
TP (NL)
4
AI09684
Note: 1. BAT54J (from STMicroelectronics) recommended.
2. Required for battery-reverse charging protection.
3. Open Drain
4. V
only for STM1403; V
for STM1403B/C.
REF
TPU
4/9