apm8601 Diodes, Inc., apm8601 Datasheet - Page 7

• Manufacturer Part Number: apm8601
• Description: Dual Channel Single Cell Linear Lithium Battery Charger With 28v Ovp And Programmable Charge Timer
• Manufacturer: Diodes, Inc.

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