BQ25890H Overview
The bq25890H is a highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Lipolymer battery. The devices support high input voltage fast charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase.
BQ25890H Key Features
- 1 High Efficiency 5-A, 1.5-MHz Switch Mode Buck Charge
- 93% Charge Efficiency at 2 A and 91% Charge Efficiency at 3 A Charge Current
- Optimize for High Voltage Input (9 V / 12 V)
- Low Power PFM mode for Light Load Operations
- USB On-the-Go (OTG) with Adjustable Output from 4.5 V to 5.5 V
- Selectable 500-KHz / 1.5-MHz Boost Converter with up-to 2.4 A Output
- 93% Boost Efficiency at 5 V at 1 A Output
- Accurate Hiccup Mode Overcurent Protection
- Support down-to 2.5V Battery
- Support PWM only or PFM/PWM control for Light Load Efficiency