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UB10803 Datasheet

ONE-CELL STANDALONE LINEAR LITHIUM BATTERY CHARGER

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UNISONIC TECHNOLOGIES CO., LTD
UB10803
Preliminary
ONE-CELL STANDALONE
LINEAR LITHIUM BATTERY
CHARGER
CMOS IC
DESCRIPTION
SOP-8
The UTC UB10803 is a fully-integrated single-cell Li-ion/Polymer
battery charger. The device operates without external FET and
blocking diode, and employs a constant-current constant-voltage
(CC/CV) charging profile.
The fast-charge and end-of-charge (EOC) currents are
programmable with independent external resistors. When the battery
is deeply discharged to lower than 2.75V, the charger firstly
pre-charges the battery with typically 20% of the programmable
fast-charge current. When the charge current is reduced to the
programmed EOC current level (almost works completely in a
constant-voltage (CV) mode), an EOC indication is displayed through
the CHG pins. The UTC UB10803 is protected by thermal regulation
technology to prevent the IC from over-heat during charging.
Two status indication pins (PPR and CHG), which are both
implemented as an open-drain outputs, can be used to drive LEDs or
work as logic interface to a microprocessor. When no adapter is
attached or when the charger is disabled, the leakage current from
battery cell is less than 1uA typically.
FEATURES
1
DFN-8(2x3)
* A Constant-Current/Constant-Voltage Linear Charger
for Single-Cell Li-ion/Polymer Batteries
* Integrated Pass Element and Current Sensor
* Highly-Integrated, Requiring No External FETs or
Blocking Diode
* 4.2V Voltage Accuracy: ±1.2% All Temperatures
(Available with 4.10V and 4.36V options upon request)
* Programmable Charge Current 50mA to 500mA
* Programmable End-Of-Charge Current by Current
Recharge Algorithm
* Pre-Charge for Fully Discharged Batteries
* 1μA (Typ.) Leakage Current of the Battery when No
Input Power is Attached or Charger is Disabled
* Power Present and Charge Status Indications
* Thermal Regulation on Charging Current to Prevent
Over-Heat
* Few Components, Cost-Effective Solutions
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UB10803L-SH2-T
UB10803G-SH2-T
UB10803L-SH2-R
UB10803G-SH2-R
UB10803L- K08-2030-R
UB10803G- K08-2030-R
Package
HSOP-8
HSOP-8
DFN-8(2×3)
Packing
Tube
Tape Reel
Tape Reel
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
1 of 10
QW-R502-A26.a
Free Datasheet http://www.Datasheet4U.com




UTC

UB10803 Datasheet Preview

UB10803 Datasheet

ONE-CELL STANDALONE LINEAR LITHIUM BATTERY CHARGER

No Preview Available !

UB10803
PIN CONFIGURATION
Preliminary
CMOS IC
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
PIN NAME
VIN
PPR
CHG
EN
GND
IMIN
IREF
BAT
DESCRIPTION
Supply Input
Power Present Active-Low Open Drain Power Status Indicator
Charge Active-Low Open Drain Charge Status Indicator
Enable Active-Low Input
Ground
End-Of-Charge Current Setting Input
Charge Current Setting Input for Adaptor Mode
Battery Terminal
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 10
QW-R502-A26.a
Free Datasheet http://www.Datasheet4U.com


Part Number UB10803
Description ONE-CELL STANDALONE LINEAR LITHIUM BATTERY CHARGER
Maker UTC
Total Page 10 Pages
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