ACT2801 datasheet(6/25 Pages) ACTIVE-SEMI

6 / 25 page

Rev 9, 14-Mar-17

Innovative PowerTM

- 6 -

www.active-semi.com

ACT2801/ACT2801B/ACT2801C

PARAMETER

TEST CONDITIONS

MIN

TYP MAX UNIT

Fast Charge Current

VBAT=3.5V

ICHRG

Precondition Charge Current

2.5V≤VBAT≤2.8V, Percent of ICHRG

Precondition Voltage Threshold

VBAT rising, Rbtv=0

2.8

Precondition Voltage Threshold Hysteresis

130

Low VBAT Charge Current

VBAT=1V, RICST=39kΩ

200

EOC Current Threshold

Percent of the fast charge current

Charge Restart Voltage Threshold

200

TH Upper Temperature Voltage Threshold

Cold detect NTC thermistor, ACT2801

1.45

1.5

1.55

TH Lower Temperature Voltage Threshold

Hot detect NTC thermistor, ACT2801

0.28

0.3

0.32

TH Hysteresis

ACT2801

TH Internal Pull-up Current

ACT2801

µA

LED Flash Frequency

LED flash 1s on and 1s off

0.5

Charge Current Foldback

Charge Current Reduction Threshold1 of Vout1 Starting foldback point

4.59

4.7

4.81

Charge Current Reduction Threshold2 of Vout1 Stop foldback point,

RCS=50mΩ, RICST=39kΩ

4.57

Boost Mode

Input Voltage Operation Range

3.0

4.5

Switching Frequency

-15%

0.55

+15%

MHz

Input Voltage UVLO

VBAT rising

3.15

3.3

3.45

Input Voltage UVLO Hysteresis

VBAT falling

300

400

500

Output Voltage (VOUT)

Ta=25℃

4.97

5.05

5.10

Output Voltage Accuracy

All conditions

-3

VOUT

Output Voltage Transient Response

Vbat=3.7V, 80mA-1A-80mA, 0.1A/us

4.75

5.25

Output Over Voltage Protection

VOUT rising

5.7

Output Over Voltage Protection Hysteresis

VOUT falling

300

Output Current Regulation Range

Rcs=50mΩ, RIOST=37.5kΩ—113kΩ

0.5

1.5

ELECTRICAL CHARACTERISTICS

(VIN = 5V, TA = 25°C, unless otherwise specified.)

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