ACT2803
5 V, 2.4 A Dual Cell Battery Power Manager
Please use ACT2861 for new designs
End of Life announced October 9, 2020 (PCN 20-0153).
Last Time Buy: April 24, 2021
Contact your local sales representative for assistance.
Key Features
- Dedicated single chip solution for mobile power with minimal component count
- Dual cell battery charger with cell balancing management
- 2.4 A 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
- 10 mA no-load detection and shut-off
- 4 LED battery level indication
- < 10 uA low battery drain current
- Sophisticated battery protection
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Qorvo's ACT2803 is a high-performance, low-profile battery management IC that enables the smallest size solutions for backup battery packs and standalone battery chargers. Each solution can be implemented with a single ACT2803 IC.
The product integrates all the functions that a backup battery pack needs, including switching charger, cell balancing, boost converter and LED indication. The product 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.
ACT2803 operates at 400 kHz for switching charger and 400 kHz 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.
The product charges the battery with the 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. The product's boost converter steps battery voltage up to 5 V. The boost converter features high efficiency, constant current regulation, short circuit protection and over-voltage protection.
Typical Applications
- Power Banks
- Bluetooth Speakers
- Dual Cell Boost Battery Chargers
- Standalone Battery Chargers with USB Output
- Backup Battery Packs
Product Categories
| Charger Topology | Boost |
| Battery Cell Count | 2 |
| Input Voltage(V) | 4.5 to 5.5 |
| Max Charge Current(A) | 1.8 |
| Built-In LDO Regulator | 5 V / 50 mA |
| USB On-The-Go (OTG) | Yes |
| Max OTG Current(A) | 2.4 |
| OTG Output Auto-Detection | Yes |
| Battery Cell Balancing | Yes |
| Interface | I2C |
| ADC | No |
| Package Type | QFN, 40-pin |
| Package(mm) | 5 x 5 |
| RoHS | Yes |
| Lead Free | Yes |
| Halogen Free | Yes |
| ITAR Restricted | No |
| ECCN | EAR99 |
ACT2803 / ACT2804 GUI
The ACT2803 / ACT2804 Graphical User Interface (GUI) is packaged in a ZIP file that includes the software and all necessary drivers to communicate with the EA2803QJ-T, EA2803QJ-T0435, EA2804QJ-T and EA2804QJ-T0435 Evaluation Kits, as well instructions on how to use the tool.