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DATA SHEET
BQ25731 I2C 1- to 5-Cell Buck-Boost Battery Charge Controller with USB-C PD 3.0 OTG Output
1 Features
- No
battery MOSFET for saving cost and high efficiency
- 400-kHz/800-kHz programmable switching frequency for high efficiency/high power
density
- Buck-boost charger for USB-C Power Delivery (PD)
interface platform
- 3.5-V to 26-V
input range to charge 1- to 5-cell battery
- Charge current up to 16.2
A/8.1 A with 128-mA/64-mA resolution based on 5-mΩ/10-mΩ sensing
resistor
- Input current limit up to
10 A/6.35 A with 100-mA/50-mA resolution based on 5-mΩ/10-mΩ sensing
resistor
- Support USB 2.0, USB 3.0,
USB 3.1 and USB Power Delivery (PD)
- Input Current Optimizer
(ICO) to extract max input power without overloading the adapter
- Seamless transition
between buck, buck-boost, and boost operations
- Input current and voltage
regulation (IINDPM and VINDPM) against source overload
- TI patented switching frequency
dithering pattern for EMI noise reduction
- TI patented Pass Through Mode
(PTM) for system power efficiency improvement and battery fast charging
achieving 99% efficiency.
- Input and battery current monitor
through dedicated pins
- Integrated 8-bit ADC to monitor
voltage, current and power
- Support independent comparator logic with dedicated pins
- Power up USB port from battery
(USB OTG)
- 3-V to 24-V OTG with 8-mV
resolution
- Output current limit up
to 12.7 A/6.35 A with 100-mA/50-mA resolution based on 5-mΩ/10-mΩ
sensing resistor
-
I2C host control
interface for flexible system configuration
- High accuracy for the regulation
and monitor
- ±0.5% Charge voltage
regulation
- ±3% Charge current
regulation
- ±2.5% Input current
regulation
- ±2% Input/charge current
monitor
- Safety
- Thermal shutdown
- Input, system, battery
overvoltage protection
- Input, MOSFET, inductor
overcurrent protection
- Package: 32-Pin 4.0 mm × 4.0 mm
WQFN