BQ25790 Description
The BQ25790 is a fully integrated switch-mode buckboost charger for 1-4 cell Li-ion battery and Lipolymer battery. The integration includes 4 switching MOSFETs (Q1, Q2, Q3, Q4), input and charging current sensing circuits, the battery FET (QBAT) and all the loop pensation of the buck-boost converter. It provides high power density and design flexibility to charge batteries across the full input voltage range for USB...
BQ25790 Key Features
- 1 High efficient synchronous Switch Mode buckboost charger for 1-4 cell battery
- 750-kHz and 1.5-MHz Programmable switching frequencies
- Efficiency optimized for charging 2s battery, 96.5% efficiency with 9-V input and 94.5% efficiency with 15-V input at 3-
- Charging current up to 5 A with 10-mA resolution
- Support wide range of input sources
- 3.6-V to 24-V Wide input operating voltage range with 30-V