A4051
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
1A LINEAR LI-ION BATTERY CHARGER
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
VCC
Conditions
Min
Typ
Max
Unit
Input supply voltage
4.25
-
-
-
6.5
2000
500
V
uA
uA
Charge mode, RPROG =10k
Standby mode
350
150
Input supply current
Regulated Output Voltage
BAT pin Current
ICC
VFLOAT
IBAT
Shutdown mode
(RPROG not connected,
VCC<VBAT or VCC<VUV)
-
50
100
uA
0°C≤TA≤85°C, IBAT = 40mA 4.177
4.263
550
V
RPROG =2k,Current mode
RPROG =1k,Current mode
Standby mode, VBAT=4.2V
Shutdown mode
Sleep mode, VCC=0V
VBAT<VTRIKL, RPROG=1k
450
900
0
-
-
500
1000 1100
-2.5
-1
-0.3
100
mA
-6
-2.5
-2.5
110
uA
Trickle charge current
Trickle charge Threshold
Voltage
Trickle voltage hysteresis
voltage
VCC Undervoltage lockout
Threshold
VCC Undervoltage lockout
hysteresis
VCC-VBAT Lockout Threshold
voltage
ITRIKL
90
mA
V
VTRIKL
RPROG =10k，VBAT Rising
RPROG =10k
2.8
118
3.7
2.9
135
3.8
3.0
157
3.93
300
VTRHYS
VUV
VUVHYS
VASD
mV
V
From VCC low to high
150
200
mV
mV
VCC from low to high
VCC from high to low
250
100
5
R
PROG=1k
0.085
0.1
0.115
C/10 Termination Current
Threshold
ITERM
mA/mA
RPROG=2k
RPROG =1k, Current mode
0.085
0.93
-
0.1
1.0
0.115
1.07
0.8
PROG pin Voltage
VPROG
VCHRG
VSTDBY
V
V
V
CHRG pin Output low voltage
STDBY pin Output low voltage
ICHRG=2.5mA
0.35
ISTDBY=2.5mA
-
0.35
0.8
Recharge Battery threshold
Voltage
ΔVRECG VFLOAT - VRECHRG
50
100
200
mV
CE high voltage
CE low voltage
VCE-H
VCE-L
1.2
-
-
-
-
V
V
0.6
TEMP pin voltage of the
high-end flip
TEMP pin voltage of the low-end
flip
Limited temperature patterns in
the junction temperature
VTEMP-H
VTEMP-L
TLIM
-
42
-
80
45
82
-
%VCC
%VCC
℃
145
-
REV1.3
- JUN 2010 RELEASED, APR 2017 UPDATED -
- 4 -
AITSEMI [ AiT Semiconductor ]
