描述 Description

ACT2801 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.

ACT2801 can enable 5V/1A Power Bank solution and can support input current of up to 1.5A and an output current of up to 1.5A.

ACT28xx Family integrates all the functions that a backup battery pack needs, including switching charger, 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.

ACT2801 operates at 2.2MHz/1.1MHz for switching charger and 1.1MHz/0.55MHz for boost converter allowing tiny external inductor and capacitors. ACT2801 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.

特性 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 1.5A
·Programmable Constant Output Current in Boost Mode to up to 5V/1.5A
·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