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AXP209 Datasheet(PDF) 13 Page - List of Unclassifed Manufacturers

Part No. AXP209
Description  Enhanced single Cell Li-Battery and Power System Management IC
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Maker  ETC2 [List of Unclassifed Manufacturers]
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AXP209 Datasheet(HTML) 13 Page - List of Unclassifed Manufacturers

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AXP209
Enhanced single Cell Li-Battery and Power System Management IC
13
LDO24IN
PI
Input to LDO2 and LDO4
14
VIN3
PI
DCDC3 input source
15
LX3
IO
Inductor Pin for DCDC3
16
PGND3
G
NMOS GND for DCDC3
17
DCDC3
I
Feed back to DCDC3
18
GPIO1
IO
GPIO 1
REG93H [2: 0]
ADC Input
19
GPIO0
IO
GPIO 0
REG90H [2: 0]
Low noise LDO / Switch
ADC Input
20
EXTEN
O
External Power Enable
21
APS
PI
Internal Power Input
22
AGND
G
Analog Ground
34
BIAS
IO
External 200Kohm 1% resistor
24
VREF
O
Internal reference voltage
25
PWROK
O
Power Good Indication OutPut
26
VINT
PO
Internal logic power, 2.5V
27
LDO1SET
I
It set the LDO1 default voltage.
28
LDO1
O
LDO1 output,for Host RTC block
29
DC3SET
I
It set the DCDC3 default voltage
30
BACKUP
IO
Backup battery pin
31
VBUS
PI
USB VBUS input
32,33
ACIN
PI
Adapter input
34,35
IPSOUT
IO
Main Battery
36
CHGLED
O
charger status indication
37
TS
I
Battery Temperature sensor input or an external ADC
input
38,39
BAT
PO
System power source
40
LDO3IN
O
LDO3 input source
41
LDO3
I
Output Pin of LDO3
42
BATSENSE
I
Current sense port1
43
CHSENSE
O
Current sense port2
44
VIN1
PI
DCDC1 input source
45
LX1
IO
Inductor Pin for DCDC1
46
PGND1
G
NMOS Ground for DCDC1
47
PWRON
I
Power On-Off key input,Internal 100k pull high to APS
48
IRQ /
IO
IRQ output or wakeup
WAKEUP
49
EP
G
Exposed Pad, need to connect to system ground
Confidential
Page 13/45


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