Active-Semi Solutions for Sustainability
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Product Features

  • Dedicated Single Chip Solution for Mobile Power with Minimal?Component Count
  • High Charge & Discharge Efficiency, 95% Boost Efficiency (Vbat = 4.1V)
  • <10μA Low Battery Leakage Current in Hi-Z Mode during Storage
  • Programmable Input Current Limit to up to 3.0A
  • Programmable Constant Output Current in Boost Mode to up to 5V/2.1A
  • No Load Shutdown and Push Button Turn-on
  • Sophisticated Battery Protection for Over Current (OCP), Over Voltage (OVP), Over Temperature (OTP) and Short Circuit Protections (SCP). Battery Disconnection at Output Short

五分快三计划ACT2804 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.

ACT2804 operates at 400kHz for switching charger and 400kHz for boost converter allowing tiny external inductor and capacitors. ACT2804 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.ACT28xx Family provides 3.5mA constant currents to drive 4 LEDs to indicate battery level and charge status. Battery impedance is compensated for battery level indication.


5V / 3.4A

5V / 2.4A + 1A

5V / 2.1A + 1A

1.8A 4.2V Yes Yes QFN55-40

5V / 3.4A

五分快三计划5V / 2.4A + 1A

5V / 2.1A + 1A

1.8A 4.35V Yes Yes QFN55-40

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

  • Backup Battery Pack
  • Power Bank
  • Mobile Power
  • Standalone Battery Charger with USB Output
  • Bluetooth Speaker

EA2804QJ-T EVK User’s Guide

五分快三计划The high-level of integration included in ACT28xx ICs enable Industry smallest design of battery chargers and mobile chargers such as Power Banks.

五分快三计划The smaller PCB and reduced component count and size enables smaller industrial design and associated costs.

In addition, it allows for larger battery pack to store more energy within the power bank product.


The Graphical User Interface (GUI五分快三计划) is packaged in a ZIP file that includes the software and all necessary drivers to communicate with the EA2804QJ-T and EA2804QJ-T0435 Evaluation Kits, as well instructions on how to use the tool.


*EA2803 and EA2804 use the identical GUI