Innovative Power

TM

- 1 - www.active-semi.com

Copyright © 2015-2017 Active-Semi, Inc.

FEATURES

 Dedicated Single Chip Solution for Mobile Power

With Minimal Component Count

 5V/1.5A Constant Output Current Limit in Boost

Mode

Mode During Storage

 Boost Auto Turn-off at No Load and Push

Button Turn-on

 Battery Over Current, Over Voltage, Over

Temperature and Short Circuit Protections

 Boost Auto Startup with Load Detection

 Up to 2.0A Input Current Limit with Prioritized

Power Path to Output

 5V+/-100mV Output Voltage in Boost Mode

 1.1MHz/0.55MHz Switching Frequencies

of Charge

 Charge Current Foldback at 110°C Die

Temperature

 IC Over Temperature Protection at 160°C

 QFN4x4-24 Package

APPLICATIONS

 Backup Battery Pack

 Power Bank

battery charger. ACT2801/ACT2801B/ACT2801C

integrates all the functions that a backup battery

pack needs, including switching charger, boost

converter and LED indication.

ACT2801/ACT2801B/ACT2801C operates at

1.1MHz for switching charger and 0.55MHz for

boost converter allowing tiny external inductor and

capacitors. ACT2801/ACT2801B/ACT2801C

provides a direct power path from input to output

with programmable current limit while providing

power to switching charger. Output has higher

at 110°C with charge current foldback.

ACT2801/ACT2801B/ACT2801C boost converter

steps battery voltage up to 5V. Boost converter

features high efficiency, constant current regulation,

short circuit protection and over voltage protection.

ACT2801/ACT2801B/ACT2801C provides 3.5mA

constant currents to drive 4 LEDs to indicate

battery level and charge status. Battery impedance

is compensated for battery level indication.

Boost CC/CV Curve

Innovative Power

TM

- 2 - www.active-semi.com

Copyright © 2015-2017 Active-Semi, Inc.