ACT2801/ACT2801C
Rev 2, 15-Apr-14
ELECTRICAL CHARACTERISTICS
(VIN = 5V, TA = 25°C, unless otherwise specified.)
PARAMETER
Precondition Voltage Threshold
Precondition Voltage Threshold Hysteresis
Low VBAT Charge Current
TEST CONDITIONS
MIN TYP MAX UNIT
VBAT rising, Rbtv=0
2.8
130
200
13
V
mV
mA
%
VBAT=1V, RICST=39kΩ
EOC Current Threshold
Percent of the fast charge current
Charge Restart Voltage Threshold
200
mV
Cold detect NTC thermistor
ACT2801-T0550/ACT2801-T1026
TH Upper Temperature Voltage Threshold
TH Lower Temperature Voltage Threshold
1.5
0.3
V
V
Hot detect NTC thermistor
ACT2801-T0550/ACT2801-T1026
TH Hysteresis
ACT2801-T0550/ACT2801-T1026
ACT2801-T0550/ACT2801-T1026
50
60
mV
µA
TH Internal Pull-up Current
Charge Current Foldback
Charge Current Reduction Threshold1 of Vout1 Starting foldback point
4.59
3.0
4.7
4.81
4.5
V
V
Stop foldback point, RCS=50mΩ,
Charge Current Reduction Threshold2 of Vout1
4.57
RICST=39kΩ
Boost Mode
Input Voltage Operation Range
Switching Frequency
V
-15% 0.55 +15% MHz
Input Voltage UVLO
VBAT rising
VBAT falling
Ta=25℃
3.3
400
V
mV
V
Input Voltage UVLO Hysteresis
Output Voltage (VOUT)
Output Voltage Accuracy
4.97 5.05
5.10
2
All conditions
-3
VOUT
%
V
Output Voltage Transient Response
Vbat=3.7V, 80mA-1A-80mA, 0.1A/us
VOUT rising
4.75
5.25
Output Over Voltage Protection
Output Over Voltage Protection Hysteresis
Output Current Regulation Range
Output Current Setting
5.7
V
mV
A
VOUT falling
300
0.5
1.5
Rcs=50mΩ, RIOST=37.5kΩ—113kΩ
Rcs=50mΩ, RIOST=97.6kΩ
All conditions
1.3
200
100
5.6
A
The Maximum Voltage Across VRcs
Minimum On-Time
mV
ns
A
Low Side Switch Peak Current Limit
VBAT=3.2V, VOUT=5V
4.0
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