APL3200 Anpec Electronics Corporation, APL3200 Datasheet
APL3200
Manufacturer Part Number
APL3200
Description
Dual-input, Usb/ac Adapter, 1-cell Li+ Charger With Ovp And Thermal Regulation
Manufacturer
Anpec Electronics Corporation
Datasheet
1.APL3200.pdf
(22 pages)
APL3200
Features
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright
Rev. A.2 - Oct., 2007
Pin Configuration
Charge from USB or AC Adapter
Accurate BATT Regulation Voltage
Programmable DC Charging Current
Selectable USB Charging Current (either 100mA
or 500mA)
Thermal Regulation for Simplified Board Design
Input protection Up to 18V
Soft-Start
External Thermistor Monitoring
Charge Shutdown Control
Charge Status Outputs
DC and USB Power-OK Indicators
Small, High Power 5x5 QFN-16 Package
Lead Free Available (RoHS Compliant)
STAT1
DCLV
USEL
DC
ANPEC Electronics Corp.
1
2
3
4
APL3200 (5x5 QFN-16)
16
5
(Bottom)
Top View
15
6
GND
14
7
13
8
10
11
12
9
USB
BYP
STAT2
REF
Li+ Charger with OVP and Thermal Regulation
1
General Description
The APL3200 charges a single-cell Li+ battery from both
USB and AC adapter sources. It also includes battery-
to-input power switchover, so the system can be powered
directly from the power source rather than from the battery.
In its simplest application, the APL3200 needs no
external MOSFET or diodes, and accepts input
voltages up to 6.5V; however, DC input overvoltage
protection up to 18V can be added with a single SOT
PFET.
On-chip thermal limiting simplifies PC board layout and
allows optimum charging rate without the thermal
limits imposed by worst-case battery and input voltage.
When the APL3200 thermal limit is reached, the charger
does not shut down but simply reduces charging current.
Ambient or battery temperature can be monitored with
an external thermistor. When the temperature is out of
range, charging pauses.
Other features include STAT 1 and STAT 2 outputs
indicating various charge status. DC power-OK (DCOK),
USB power-OK (UOK), and poweron (PON) outputs
indicate when valid power is present. These outputs drive
logic or power-selection MOSFETs to disconnect the
charging sources from the load and to protect the
APL3200 from overvoltage. The APL3200 contains no
logic for communication with the USB host. It must
receive instructions from a local microcontroller. The
APL3200 is available in a 16-pin 5mmx5mm QFN
package and o p e r a t e s over the -40 C to +85 C
temperature range.
Applications
Dual-Input, USB/AC Adapter, 1-Cell
Smart Phones and PDAs
Wireless Appliances
Digital Still Camera
Internet Appliances
www.anpec.com.tw
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