User Manual

Data Sheet
Li-ion/Li Polymer Battery Charger AUR9801C
Aug. 2012 Rev. 1. 0 BCD Semiconductor Manufacturing Limited
5
Electrical Characteristics
V
IN
=5V and T
A
=25°C for the typical values. The maximum and minimum values are over -40°C to 85°C
Ambient Temperature with a supply voltage in the range of 4.6V to 5.5V, unless otherwise specified.
Parameter Symbol Conditions Min Typ Max Units
Power-on Reset
VIN Rising Voltage 3.2 3.6 3.9 V
VIN Falling Voltage 2.25 2.5 2.7 V
Standby Current
VBAT Pin Sink Current I
STANDBY
VIN floating or
EN=LOW
3.3
µA
VIN Pin Supply Current I
IN
VBAT floating and
EN pulled low
150
µA
VBAT floating and
EN floating
1 mA
VIN-VBAT Offset Voltage
Offset Voltage V
OS
V
BAT
=4.2V,
I
BAT
=20mA,
use /STATUS pin
45 80 100 mV
Voltage Regulation
Output Voltage V
BAT
Tested at 50mA load,
5V input, and 25°C
4.213 4.256 4.299 V
Dropout Voltage
V
BAT
=4.0V,
Charge Current=0.35A
175 mV
Charge Current
Constant Charge Current I
CHG
R
IREF
=100k
Ω
,
V
BAT
=3.0V to 4.0V
760 800 840 mA
Trickle Charge Current I
TRICKLE
R
IREF
=100k
Ω
,
V
BAT
=2.5V
120 mA
End-of-Charge Threshold I
MIN
R
IREF
=100kΩ
70 80 90 mA
V2P8 Pin Output
V2P8 Pin Output Voltage V
2P8
Load current less than
1mA
2.8 2.9 3.0 V
Recharge Threshold
Recharge Threshold V
RECHG
3.97 4.05 4.13 V
Recharge Threshold
Hysteresis
V
RECHGHY
S
50 mV
Trickle Charge Threshold
Trickle Threshold
Voltage
V
MIN
2.7 2.8 2.9 V
Trickle Threshold
Hysteresis
V
MINHYS
50 100 150 mV