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ACT2802B Datasheet Preview

ACT2802B Datasheet

5V/2.5A Backup Battery Pack Manager

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ACT2802 / ACT2802B
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 Precondi-
tioning, 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
Vbat
APPLICATIONS
Backup Battery Pack
Power Bank
Mobile Power
Standalone Battery Charger with USB Output
GENERAL DESCRIPTION
ACT2802/ACT2802B is a space-saving and high-per-
formance low-profile single-chip solution for backup bat-
tery pack and standalone battery charger.
ACT2802/ACT2802B integrates all the functions that a
backup battery pack needs, including switching charger,
boost converter and LED indication.
ACT2802/ACT2802B operates at 1.1MHz for switching
charger and 0.55MHz for boost converter allowing tiny
external inductor and capacitors. ACT2802/ACT2802B
provides a direct power path from input to output with
programmable current limit while providing power to
switching charger. Output has higher priority than bat-
tery charger if the programmed input current limit is
reached.
ACT2802/ACT2802B 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 cur-
rent foldback.
ACT2802/ACT2802B boost converter steps battery
voltage up to 5V. Boost converter features high effi-
ciency, constant current regulation, short circuit
protection and over voltage protection.
ACT2802/ACT2802B provides 3.5mA constant currents
to drive 4 LEDs to indicate battery level and charge sta-
tus. Battery impedance is compensated for battery level
indication.
Vin
R7
2.7Ω
C1
4.7uF
10V
R5 R6
80k 60k
VI NLED1
LED2
LED3 LED4 BAT
VO UT
RIMC
TH
S1
BLVS
ACT2802
SW
PB
CSP
PG ND
CSN
AGND HZ BTV ILIM IOST ICST
R1 R2 R3 R4
25k 750Ω 93.1k 43.2k
L1 2.2uH
Rcs
25mΩ
C2
22uF
10V
Vbat
NTC
Vout
C3
2*22µF
10V
GND
Data Sheet Rev. 8.0, January 20, 2020 | Subject to change without notice
1 of 25
www.qorvo.com




qorvo

ACT2802B Datasheet Preview

ACT2802B Datasheet

5V/2.5A Backup Battery Pack Manager

No Preview Available !

ACT2802 / ACT2802B
5V/2.5A Backup Battery Pack Manager
ORDERING INFORMATION
PART NUMBER
PB TURN
OUTPUT FLASHLIGHT
OFF
BOOST
ACT2802QL-T1028 5V/2.5A
No
Yes
ACT2802BQL-T1028 5V/2.5A
Yes
No
LEDS
ALWAYS
ON IN
BOOST
No
Yes
LATCH
OFF AT
BOOST
UVLO
Yes
Yes
BOOST
LIGHT
LOAD
OFF TIME
16s
16s
PACKAGE
QFN44-24
QFN44-24
PIN CONFIGURATION
Data Sheet Rev. 8.0, January 20, 2020 | Subject to change without notice
2 of 25
www.qorvo.com



Part Number ACT2802B
Description 5V/2.5A Backup Battery Pack Manager
Maker qorvo
Total Page 3 Pages
PDF Download

ACT2802B Datasheet PDF





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