Ti Bq25731 Battery Power Charge Management Chip Electronic Components Integrated Circuit IC.

• shape: Flat
• Conductive Type: Bipolar Integrated Circuit
• Integration: MSI
• Technics: Semiconductor IC
• Rating: Catalog
• RoHS: Yes
• Model NO.: BQ25731
• Reach: Yes
• Operating Temperature Range (°c): -40 to 125
• Transport Package: 3, 000 Large T&R
• Trademark: TI
• HS Code: 8542399000
• Production Capacity: 60000

Product Description

Quality information

RatingCatalog

RoHSYes

REACHYes

Lead finish / Ball materialNIPDAU

MSL rating / Peak reflowLevel-1-260C-UNLIM

 

Packaging information

Package | PinsWQFN (RSN) | 32

Operating temperature range (°C)-40 to 85

Package qty | Carrier3,000 | LARGE T&R

Features for the BQ25731

• 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

Description for the BQ25731

The BQ25731 is a synchronous buck-boost battery charge controller to charge a 1- to 5-cell battery from a wide range of input sources including USB adapter, high voltage USB-C Power Delivery (PD) sources, and traditional adapters. It offers a low component count, high efficiency solution for space constrained, 1- to 5-cell battery charging applications.

During power up, the charger sets the converter to a buck, boost, or buck-boost configuration based on the input source and battery conditions. The charger seamlessly transits between the buck, boost, and buck-boost operation modes without host control.