ACT2803
Rev 1, May-12-2016
5V/2.4A Dual Cell Battery Power Manager
Battery Over-charge and Over-discharge
FEATURES
Protections
Dedicated Single-chip Integrated Dual Cell
Charge/Discharge Thermal Regulation
TQFN5x5-40 Package
Battery Management
Dual Cell Battery Charger with Cell Balancing
Management
APPLICATIONS
Auto Detection support USB BC1.2, Chinese
Backup Battery Pack
Power Bank
Dual Cell Boost Battery Charger
Bluetooth Speaker
Standalone Battery Charger with USB Output
YD/T 1591-2009, Apple, and Samsung Devices
Meet EN55022 Class B Radiated EMI Standard
Pass MFi Test
4.5V-5.5V Input Voltage and 2.75A Input Current
Limit
2.4A Output Current with CC Regulation
GENERAL DESCRIPTION
5.07V+/-1% Output with Prioritized Power Path
ACT2803 is a space-saving and dedicated single-
chip solution for dual-cell battery charge and
discharge. It takes 5V USB input source to charge a
dual cell battery with boost configuration in three
phases: preconditioning, constant current, and
constant voltage. Charge is terminated when the
current reaches 10% of the fast charge rate. The
battery charger is thermally regulated at 110˚C with
charge current foldback.
from Input to Output
4.20V/4.35V +/- 0.5% Battery Charge Voltage
Accuracy of Each Cell
Output Plug-in Detection Wakeup and No Load
Detection Sleep Mode
Optimized Power Path and Battery Charge
Control
<10uA Low Battery Drainage Current
If input 5V is not present, ACT2803 discharge a
dual cell battery with buck configuration to provide
5.07V+/-1% to output ports. There is a power path
from input to output. The cycle-by-cycle peak
current mode control, constant current regulation,
short circuit protection and over voltage protection
maximize safe operation.
I2C Port for Optimal System Performance and
Status Reporting
Configurable Charge, Discharge and HZ modes
>92% Charge and Discharge Efficiency at 2.4A
Output for Full Battery Range
4 Modes of LED Operation
Capability to Charge Wearable Devices
Weak Input Sources Accommodation
Safety:
ACT2803 provides 4 LED drive pins for battery
capacity level and charge status indication to
indicate 25%, 50%, 75%, and 75% above battery
level with battery impedance compensation. The
LED indication patterns are programmable .
Input Over-voltage Protection
Nearly Zero Power Short Circuit Protection
Output Over-voltage Protection
ACT2803 is available in a thermally enhanced
5mmx5mm QFN55-40 package with exposed pad.
Buck Output CC/CV
6.0
5.0
VBAT = 6.0V
4.0
3.0
VBAT = 8.2V
2.0
1.0
0
0
500
1000
1500
2000
2500
3000
Output Current (mA)
Innovative PowerTM
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