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ACT2802B Datasheet Preview

ACT2802B Datasheet

5V/2.5A Backup Battery Pack Manager

No Preview Available !

ACT2802/ACT2802B/ACT2802C
Rev 7, 15-Jul-16
5V/2.5A Backup Battery Pack Manager
FEATURES
 Dedicated Single Chip Solution for Mobile Power
With Minimal Component Count
 5V/2.5A Constant Output Current Limit in Boost
Mode
 2.5A Switching Charger Current Limit
 Programmable 4.1V to 4.35V Battery Voltage
 95% Boost Efficiency (Vbat=4.1V)
 Adaptive to 10mA-2400mA Input Sources
 Battery Disconnection at Output Short
 <10µA Low Battery Leakage Current at HZ
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 3.0A Input Current Limit with Prioritized
Power Path to Output
 5V+/-100mV Output Voltage in Boost Mode
 1.1MHz/0.55MHz Switching Frequencies
 2.2uH Inductor and Low Profile Ceramic
Capacitor
 4 LEDs Battery Level and Status Indication
 Battery Impedance Compensation
 Full Cycle of Battery Charge Management
Preconditioning, Fast Charge, Top off and End
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
 Mobile Power
 Standalone Battery Charger with USB Output
GENERAL DESCRIPTION
ACT2802/ACT2802B/ACT2802C is a space-saving
and high-performance low-profile single-chip
solution for backup battery pack and standalone
battery charger. ACT2802/ACT2802B/ACT2802C
integrates all the functions that a backup battery
pack needs, including switching charger, boost
converter and LED indication.
ACT2802/ACT2802B/ACT2802C operates at
1.1MHz for switching charger and 0.55MHz for
boost converter allowing tiny external inductor and
capacitors. ACT2802/ACT2802B/ACT2802C
provides a direct power path from input to output
with programmable current limit while providing
power to switching charger. Output has higher
priority than battery charger if the programmed
input current limit is reached.
ACT2802/ACT2802B/ACT2802C charges battery
with full cycle of preconditioning, fast charge with
constant current and constant voltage until end of
charge. The battery charger is thermally regulated
at 110°C with charge current foldback.
ACT2802/ACT2802B/ACT2802C boost converter
steps battery voltage up to 5V. Boost converter
features high efficiency, constant current regulation,
short circuit protection and over voltage protection.
ACT2802/ACT2802B/ACT2802C provides 3.5mA
constant currents to drive 4 LEDs to indicate
battery level and charge status. Battery impedance
is compensated for battery level indication.
Innovative PowerTM
-1-
Boost CC/CV Profile
5.5
VBAT =3.2V
5.0
VBAT =3.7V
4.5
4.0
VBAT =4.1V
3.5
3.0
0
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7
Output Current (A)
www.active-semi.com
Copyright © 2016 Active-Semi, Inc.




Active-Semi

ACT2802B Datasheet Preview

ACT2802B Datasheet

5V/2.5A Backup Battery Pack Manager

No Preview Available !

ACT2802/ACT2802B/ACT2802C
Rev 7, 15-Jul-16
ORDERING INFORMATION
PART NUMBER
OUTPUT
FLASHLIGHT
PB TURN
OFF BOOST
LEDS AL-
WAYS ON IN
BOOST
LATCH OFF
AT BOOST
UVLO
BOOST
LIGHT LOAD
OFF TIME
PACKAGE
ACT2802QL-T1028 5V/2.5A
No
Yes
No Yes 16s QFN44-24
ACT2802BQL-T1028 5V/2.5A
Yes
No
Yes Yes 16s QFN44-24
ACT2802CQL-T1028 5V/2.5A
Yes
No
No Yes 16s QFN44-24
PIN CONFIGURATION
Innovative PowerTM
- 2 - www.active-semi.com
Copyright © 2016 Active-Semi, Inc.


Part Number ACT2802B
Description 5V/2.5A Backup Battery Pack Manager
Maker Active-Semi
PDF Download

ACT2802B Datasheet PDF






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