BQ25910 Texas instruments

BQ25910

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BQ25910

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Описание

The BQ25910 is an integrated three-level switch-mode parallel battery charge management device for single cell Li-ion and Li-polymer batteries. Utilization of the three-level converter maintains highest switch-mode operation efficiency while reducing solution footprint and increasing power density. The device supports fast charging with high input voltage for a wide range of portable devices. The solution integrates reverse-blocking FET (QBLK), and four switching FETs (QHSA, QHSB, QLSB, QLSA). The I2C serial interface with charging and system settings makes the device a truly flexible solution.

Parallel charger operation provides fast charging in dual charger configuration
High efficiency 750-kHz switch mode three-level buck parallel charger
- Reduced ripple to support low profile inductor
- 95.4% Charge efficiency at 1.5 A from 5-V input
- 93.3% Charge efficiency at 3 A from 9-V input
- Superior efficiency compared to traditional buck converter in compact form factor
Single Input to support USB input and adjustable high voltage adapters
- Support 3.9-V to 14-V input voltage range with 20-V absolute maximum input voltage rating
- Input current limit (500 mA to 3.6 A with 100-mA resolution) to support USB2.0 and USB 3.0 standard and high voltage adaptors
- Maximum power tracking by input voltage limit (VINDPM) up to 14 V
Flexible I²C mode for optimal system performance
High integration includes all MOSFETs, current sensing and loop compensation
- Lossless charge current sensing without sense resistor
< 10-µA Low battery leakage current during stand-by mode
High accuracy
- ±0.4% Charge voltage regulation
- ±10% Charge current regulation
- ±7.5% Input current regulation
- Remote differential battery sensing
Safety
- Thermal regulation and thermal shutdown
- Input UVLO and overvoltage protection
- Battery OVP
- Input dynamic power management (DPM)
- Charging safety timer
- Flying capacitor short circuit protection
- Output voltage short circuit protection
Available in 36-ball WCSP package

Number of series cells	1
Charge current (max) (A)	6
Vin (max) (V)	14
Cell chemistry	Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4
Battery charge voltage (min) (V)	3.5
Battery charge voltage (max) (V)	4.775
Absolute max Vin (max) (V)	20
Control topology	Switch-Mode Buck
Control interface	I2C
Features	IC thermal regulation, IINDPM (Input current limit), Input OVP, VINDPM (Input voltage threshold to maximize adaptor power)
Vin (min) (V)	3.9
Rating	Catalog
Operating temperature range (°C)	-40 to 85