Active-Semi Solutions for Sustainability
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Product Features

  • Dedicated Single Chip Solution for Mobile Power with Minimal?Component Count
  • Dual cell battery charger with Cell Balancing Management
  • 2.4A output with Constant Current (CC) regulation
  • USB Auto Detection
  • I2C Interface for optimal system performance and status reporting
  • Output plug-in detection and Wakeup from sleep mode
  • 10mA No Load Detection and Shut-off
  • 4 LED battery level indication
  • <10uA low battery drain current
  • Sophisticated Battery Protection
    • Over Current (OCP)
    • Over Voltage (OVP)
    • Over Temperature (OTP)
    • Short Circuit Protections (SCP)
    • Battery Disconnection at Output Short

五分快三计划ACT2803 from ACT28xx Family of high-performance, low-profile ICs enables Industry’s smallest size solutions for backup battery pack and standalone battery chargers. Each solution can be implemented without out the need for additional ICs other than a single ACT28xx.

ACT28xx Family integrates all the functions that a backup battery pack needs, including switching charger, cell balancing, boost converter and LED indication. ACT28xx Family also includes an input to obtain user feedback (for example, via a push button), to support various user-interface functions such as turn on/off charging and query charging status. The IC supports LED indication to display charging level on 4 LEDs.

五分快三计划ACT2803 operates at 400kHz for switching charger and 400kHz for boost converter allowing tiny external inductor and capacitors. ACT2803 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.

五分快三计划ACT28xx Family 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. ACT28xx Family boost converter steps battery voltage upto 5V. Boost converter features high efficiency, constant current regulation, short circuit protection and over voltage protection.

ACT2803QJ-T 5V/2.4A 1.8A 4.2V Yes Yes QFN44-24
ACT2803QJ-T0435 5V/1.5A 1.8A 4.35V Yes Yes QFN44-24

Advantages of our Battery Management

Boost Auto Detection Startup with load detection and turn off at no load and push button turn on
Battery Impedance Compensation Optimizes the full utilization of the battery cells and increase usable capacity in the battery pack
Output accuracy of +-1% Output with prioritized Power Path from input to output
>95% Charge and discharge efficiency With a maximum output current of 1.5A over the full battery range

  • Power Bank
  • Bluetooth Speakers
  • Dual Cell Boost Battery Charger
  • Standalone Battery Charger with USB Output
  • Backup Battery Pack

EA2803QJ-T EVK User’s Guide






五分快三计划This document describes the characteristic and operation of the Active-Semi EA2803QJ-T and ACT2804QJ-T0435 Evaluation Kit (EVK).?It provides setup and operation instructions, schematic, layout, BOM, and test data.

To access all registers download the software GUI五分快三计划?*EA2803 and EA2803 use the identical GUI

五分快三计划This EVK demonstrates the ACT2803 ActivePMU? power management IC.


The Graphical User Interface (GUI) is packaged in a ZIP file that includes the software and all necessary drivers to communicate with the EA2803QJ-T and EA2803QJ-T0435 Evaluation Kits, as well instructions on how to use the tool.


*EA2803 and EA2804 use the identical GUI