APL3208A Datasheet, PDF (1/17 Pages) Anpec Electronics Coropration – Li+ Charger Protection IC with Integrated P-MOSFET

APL3208A/B/C
Li+ Charger Protection IC with Integrated P-MOSFET
Features
General Description
• Input Over-Voltage Protection
• Current-Limit Protection
• Battery Over-Voltage Protection
• High Immunity of False Triggering
• High Accuracy Protection Threshold
• A Built-In P-MOSFET
• Available with 3 Versions of Charging Current:
450mA, 550mA, 650mA
• Thermal Shutdown Protection
• Available in TDFN2x2-8 and TSOT-23-6A Packages
• “Lithium-Safe” Criteria
• Lead Free and Green Devices Available
(RoHS Compliant)
Applications
• Cell Phones for Infineon
Pin Configuration
ACIN 1
8 OUT
ACIN 2
7 OUT
EP
GND 3
6 CHG_DET
VBAT 4
5 CHG_SW
TDFN2x2-8
(Top View)
EP _{= Exposed Pad}
(Connected to the ground plane for better heat
dissipation)
The APL3208A/B/C provides complete Li+ charger pro-
tection against Input over-voltage, battery over-voltage,
and the charge current limit. When the input OVP or the
battery OVP is over the threshold, the IC removes the
power from the charging system by turning off an internal
switch. When the current via the internal switch surpasses
the current limit threshold, the current will be clamped in
a constant level to provide a constant current for battery
charging usage. All protections also have deglitch time
against false triggering due to voltage spikes or current
transients.
The APL3208A/B/C integrates a P-MOSFET with the body
diode reverse protection to replace the external power
bipolar transistor and Schottky diode for charger function
of the Infineon ULC2 mobile phones. When the CHG_DET
voltage drops below V +20mV, the internal power se-
BAT
lect circuit will reverse the body diode’s terminal to pre-
vent a reverse current flowing from the battery back to the
CHG_DET pin.
The APL3208A/B/C provides complete Li+ charger pro-
tections and save the external MOSFET and Schottky di-
ode for the Infineon ULC2 mobile phones. The above
features and small package make the APL3208A/B/C an
ideal part for cell phones applications.
Simplified Application Circuit
5V Adapter
or USB
R
ACIN CHG_DET
APL3208A/B/C
V_{CHG_DET}
CHG_SW
OUT
CHG_SW
TSOT-23-6A
(Top View)
GND
VBAT
Li+
Battery
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.2 - Nov., 2009
www.anpec.com.tw