Manual

APM8601
DUAL CHANNEL SINGLE CELL LINEAR LITHIUM BATTERY
CHARGER WITH 28V OVP and PROGRAMMABLE CHARGE
TIMER
APM8601
Document number: DS35138 Rev. 1 - 2
7 of 14
www.diodes.com
December 2010
© Diodes Incorporated
NEW PRODUCT
Functional Description
APM8601 is a linear Li-Ion battery charger device for single-cell applications. It has dual power inputs (DC and USB) and the
charge currents can be programmed with the R
SETI
resistor and/or the USEL pin. The device also incorporates several safety
features, such as charge timers, battery temperature monitoring and internal thermal limiting.
Functional State Diagram
ANY STATE
EN = HIGH
OR V
IN
< V
BAT
OR V
IN
< 4.0V
OR V
IN
> 7.5V
EN = LOW
A
ND V
IN
> V
BAT
A
ND V
IN
> 4.0V
A
ND V
IN
< 7.5V
V
BAT
> 3V
Reset Timer
V
BAT
< 2.82V
Reset Timer
I
BAT
< 112.5 / R
SETI
Reset Timer
I
BAT
> 172.5 / R
SETI
Reset Timer
R
THM
< 315Ω
OR (R
THM
> 3.94kΩ
A
ND R
THM
< 28.3kΩ)
(R
THM
> 315Ω
A
ND R
THM
< 3.94kΩ)
OR R
THM
> 28.3kΩ
R
THM
< 315Ω
OR (R
THM
> 3.94kΩ
A
ND R
THM
< 28.3kΩ)
(R
THM
> 315Ω
A
ND R
THM
< 3.94kΩ)
OR R
THM
> 28.3kΩ
Time out
V
BAT
< 4.05V
Reset Timer
I
BAT
> 112.5 / R
SETI
A
ND Time out
V
BAT
< 3V
A
ND Time out
DIS
A
BLE
POK 1 FLT 1 CHG 1
I
BAT
0A
PREQUAL
POK 0 FLT 1 CHG 1
I
BAT
150 / R
SETI
Timer Hold
THM
POK 0 FLT 1
CHG 1 I
BAT
0A
TOP-OFF
POK 0 FLT 1 CHG 1
CHARGE
POK 0 FLT 1 CHG 0
I
BAT
(USB) USEL Setting
I
BAT
(DC) 1500 / R
SETI
DONE
POK 0 FLT 1 CHG 1
I
BAT
0A
Timer Hold
THM
POK 0 FLT 1
CHG 0 I
BAT
0A
FAULT
POK 0 FLT 0
CHG 1 I
BAT
0A