AAT3601_08 Datasheet, PDF (21/37 Pages) Advanced Analogic Technologies – Total Power Solution for Portable Applications

PRODUCT DATASHEET
AAT3601178
Total Power Solution for Portable Applications
ENBAT
CHGIN
EN_SYS
Push-button
On switch
EN_PE
UVLO
100 μs
debounce
EN_NP
WDI
Charger
1
D ^SET Q
RQ
LDO1
LDO3
LDO5
DC/DC Buck
LDO2
LDO4
POK 1
POK 3
POK 5
POKBUCK
POK 2
POK 4
60ms Watchdog
CHGIN
BAT
SYSOUT
MUX
SYSOUT
UVLO
800ms typ
delay
10ms typ
delay
STAT_BAT
To SYSOUT
1k
STAT
SYSOUT
To SYSOUT
100k
RSTLPW
To SYSOUT
100k
RSTIN
Figure 1: Enable, Watchdog and Reset Functions Detailed Schematic.
EN_SYS pin
SYSTEM ENABLE
(Internal)
SYSOUT
SYSOUT_OK
(Internal)
LDO1
LDO3
LDO5
RSTLPW pin
EN_PE
EN_NP
LDO2
DC/DC
LDO4
RSTIN pin
100μs
debounce
Battery voltage
0V
Enabling the System
3.4V
3.4V
1.24V
1.85V
800ms
reset
time
1.24V
1.85V
Shutdown
system
Enabling NP
Shutdown NP
3.4V
1.24V
1.85V
10ms
reset
time
Figure 2a: Power Up/Down Sequence; Case 1, Adapter is Not Connected.
3601.2008.07.1.1
www.analogictech.com
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