PRODUCT DATASHEET
AAT2601178
Total Power Solution for Portable Applications
CHGIN
BAT
UVLO
Enable for
SYSOUT and
Regulators
EN_KEY
Push-button
On Switch
OUT1
ON_KEY
Micro
Processor
μP
EN_HOLD
EN_BAT
Enable for
Battery Charger
EN_TEST
Automatic
Tester or
Handsfree
Operation
Figure 1: Enable Function Detailed Schematic.
Power Up Sequence
Power Down Sequence
300ms
debounce
delay
EN_KEY
ON_KEY
EN_HOLD must be held high
before EN_KEY can be released .
EN_HOLD
OUTBuck
(Core)
90% Regulation
OUT1
(PowerDigital)
90% Regulation
65ms
RESET
Figure 2: Typical Power Up/Down Sequence.
w w w . a n a l o g i c t e c h . c o m
2601.2008.01.1.0
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