uP8001A/B
Li-ion/Li Polymer Battery Charger
in VDFN and VQFN Packages
Features
General Description
The uP8001 is a highly integrated single-cell Li-ion or Li-
Polymer battery charger specifically designed to work with
AC adaptor or USB port.
Complete Charger for 1-Cell Li-ion Batteries
Integrated Pass Element and Current Sensor
No External Blocking Diode Required
1% Voltage Accuracy
The uP8001 charges battery with a minimum current when
the battery voltage is lower than 2.8V. The charger works
at constant current mode when the battery voltage is
between 2.8V and 4.2V, the charge current is
programmable up to 2Aby an external resistor. The charge
works at constant voltage mode when the battery voltage
is 4.2V. When the input voltage is removed, the uP8001
automatically enters a low quiescent current sleep mode,
dropping the battery drain current to 1uA.
Programmable Charge Current up to 2A
Programmable End-of Charge Current
NTC Interface for Battery Temperature Sensing
Battery Insertion Detection
1uA Battery Drain Current when Input Voltage
is Removed
Automatic Trickle Charging of Low Voltage
Cells
Other features include thermal foldback charge current,NTC
thermistor interface and automatic recharge. The uP8001
is available in thermal-enhanced and space-saving VQFN
and VDFNpackages.
Automatic Battery Recharge
RoHS Compliant and 100% Lead (Pb)-Free
Ordering Information
Applications
Order Number
Package Type
Remark
Cellular Phones
uP8001ADAA-XX VDFN3x3 - 10L
uP8001AQAD-XX VQFN4x4 - 16L
uP8001BDAA-XX VDFN3x3 - 10L
XX, Battery Voltage 41: 4.1V, 42: 4.2V
narrow NTC range
wide NTC range
Handheld Computers and PDAs
Charging Docks and Cradles
USB Powered Chargers
Other Portable Applications
Note: uPI products are compatible with the current IPC/
JEDEC J-STD-020 and RoHS requirements. They are
100% matte tin (Sn) plating and suitable for use in SnPb
or Pb-free soldering processes.
Pin Configuration & Typical Application Circuit
VIN
FAULT#
STAT#
TIME
1
2
3
4
5
10 BAT
9
8
7
6
TEMP
IREF
2V8
EN
AGND
VIN
BAT
uP8001
GND
2V8
STAT#
FAULT#
EN
VDFN3X3 10-L
Battery
Pack
RU
RT
TEMP
IREF
IMIN
TOEN
TIME
VIN
FAULT#
STAT#
TIME
1
2
3
4
12 BAT
11 TEMP
10 IMIN
AGND
GND
9
IREF
VQFN4X4 – 16L
uPI Semiconductor Corp., http://www.upi-semi.com
Rev. F00, File Name: uP8001A/B-DS-F0002
1