APL3200 Datasheet, PDF (1/24 Pages) Anpec Electronics Coropration – Dual-Input, USB/AC Adapter, 1-Cell Li+ Charger with OVP and Thermal Regulation

APL3200
Features
Dual-Input, USB/AC Adapter, 1-Cell
Li+ Charger with OVP and Thermal Regulation
General Description
• 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 QFN5x5-16 and TQFN4x4-16
Packages
• Lead Free and Green Devices Available
(RoHS Compliant)
Pin Configuration
16 15 14 13
DCLV 1
12 USB
DC ₂
STAT1 3
GND
(Bottom)
11 BYP
10 STAT2
USEL 4
9 REF
56 78
The APL3200 charges a single-cell Li+ battery from both
USB and AC adapter sources. It also includes battery-
to-input power switchover, therefore, the system can be
powered directly from the power source rather than from
the battery.
In its simplest application, the APL3200 doesn’t need
external MOSFET or diodes and accepts input voltages
up to 6.5V; however, DC input over-voltage 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 doesn’t contain logic for
communication with the USB host. It must receive
instructions from a local microcontroller. The APL3200
is available in 16-pin 5mmx5mm QFN and 4mmx4mm
TQFN packages and operates over the -40°C to +85°C
temperature range.
Applications
APL3200
(Top View)
• Smart Phones and PDAs
• Wireless Appliances
• Digital Still Camera
• Internet Appliances
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 © ANPEC Electronics Corp.
1
Rev. A.5 - Apr., 2009
www.anpec.com.tw