GENERAL DESCRIPTION
ACT2804 is a space-saving and dedicated singlechip 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.

FEATURES
● Dedicated Single-chip Integrated Battery Power
   Manager
● Dual Cell Battery Charger with Cell Balancing
   Management
● Auto Detection support USB BC1.2, Chinese
   YD/T 1591-2009, Apple 2.4A, and Samsung
   Devices
● Passed Apple MFi Test
● 4.5V-5.5V Input Voltage with 3.8A Input Current
   Limit
● 2.4A+1.0A Dual Outputs with CC Regulation
● 5.07V+/-1% Output with Prioritized Power Path
   from Input to Output
● 4.2V/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
● I2C Port for Optimal System Performance and
   Status Reporting
● Configurable Charge, Discharge and HZ modes
● >92% Charge and Discharge Efficiency at 3.4A
   Output for Full Battery Range
● 4 Modes of LED Operation
● Capability to Charge Wearable Devices
● Weak Input Sources Accommodation
● Safety:
   ― Input Over-voltage Protection
   ― Nearly Zero Power Short Circuit Protection
   ― Output Over-voltage Protection
   ― Battery Over-charge and Over-discharge
      Protections
   ― Charge/Discharge Thermal Regulation
● TQFN5x5-40 Package

APPLICATIONS
● Backup Battery Pack
● Power Bank
● Dual Cell Boost Battery Charger
● Bluetooth Speaker
● Standalone Battery Charger with USB Output