BQ25731 Series
I2C 1-5 cell NVDC buck-boost battery charge controller with USB type-C PD support
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
I2C 1-5 cell NVDC buck-boost battery charge controller with USB type-C PD support
| Part | Current - Charging | Battery Chemistry | Number of Cells [Min] | Number of Cells [Max] | Programmable Features | Charge Current - Max [Max] | Mounting Type | Interface | Operating Temperature [Min] | Operating Temperature [Max] | Supplier Device Package | Fault Protection | Voltage - Supply (Max) [Max] | Battery Pack Voltage [Min] | Battery Pack Voltage [Max] | Contents | Supplied Contents | Function | Type | Utilized IC / Part | Primary Attributes [Max] [custom] | Primary Attributes [Min] [custom] | Primary Attributes [Min] [custom] | Primary Attributes [Max] [custom] | Embedded | Secondary Attributes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ25731RSNR | Constant - Programmable | Multi-Chemistry | 1 | 5 | Current, Voltage | 16.2 A | Surface Mount | I2C | -40 °C | 85 °C | 32-QFN (4x4) | Over Current, Over Temperature, Over Voltage | 26 V | 9 V | 12.6 V | |||||||||||
Texas Instruments BQ25731EVM | Board(s) | Board(s) | Battery Charger | Power Management | BQ25731 | 24 | 3.5 | 1 | 5 | I2C Interface(s) |
Key Features
• No battery MOSFET for saving cost and high efficiency400-kHz/800-kHz programmable switching frequency for high efficiency/high power densityBuck-boost charger for USB-C Power Delivery (PD) interface platform3.5-V to 26-V input range to charge 1- to 5-cell batteryCharge current up to 16.2 A/8.1 A with 128-mA/64-mA resolution based on 5-mΩ/10-mΩ sensing resistorInput current limit up to 10 A/6.35 A with 100-mA/50-mA resolution based on 5-mΩ/10-mΩ sensing resistorSupport 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 adapterSeamless transition between buck, buck-boost, and boost operationsInput current and voltage regulation (IINDPM and VINDPM) against source overloadTI patented switching frequency dithering pattern for EMI noise reductionTI patented Pass Through Mode (PTM) for system power efficiency improvement and battery fast charging achieving 99% efficiency.Input and battery current monitor through dedicated pinsIntegrated 8-bit ADC to monitor voltage, current and powerSupport independent comparator logic with dedicated pinsPower up USB port from battery (USB OTG)3-V to 24-V OTG with 8-mV resolutionOutput current limit up to 12.7 A/6.35 A with 100-mA/50-mA resolution based on 5-mΩ/10-mΩ sensing resistorI2C host control interface for flexible system configurationHigh accuracy for the regulation and monitor±0.5% Charge voltage regulation±3% Charge current regulation±2.5% Input current regulation±2% Input/charge current monitorSafetyThermal shutdownInput, system, battery overvoltage protectionInput, MOSFET, inductor overcurrent protectionPackage: 32-Pin 4.0 mm × 4.0 mm WQFNNo battery MOSFET for saving cost and high efficiency400-kHz/800-kHz programmable switching frequency for high efficiency/high power densityBuck-boost charger for USB-C Power Delivery (PD) interface platform3.5-V to 26-V input range to charge 1- to 5-cell batteryCharge current up to 16.2 A/8.1 A with 128-mA/64-mA resolution based on 5-mΩ/10-mΩ sensing resistorInput current limit up to 10 A/6.35 A with 100-mA/50-mA resolution based on 5-mΩ/10-mΩ sensing resistorSupport 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 adapterSeamless transition between buck, buck-boost, and boost operationsInput current and voltage regulation (IINDPM and VINDPM) against source overloadTI patented switching frequency dithering pattern for EMI noise reductionTI patented Pass Through Mode (PTM) for system power efficiency improvement and battery fast charging achieving 99% efficiency.Input and battery current monitor through dedicated pinsIntegrated 8-bit ADC to monitor voltage, current and powerSupport independent comparator logic with dedicated pinsPower up USB port from battery (USB OTG)3-V to 24-V OTG with 8-mV resolutionOutput current limit up to 12.7 A/6.35 A with 100-mA/50-mA resolution based on 5-mΩ/10-mΩ sensing resistorI2C host control interface for flexible system configurationHigh accuracy for the regulation and monitor±0.5% Charge voltage regulation±3% Charge current regulation±2.5% Input current regulation±2% Input/charge current monitorSafetyThermal shutdownInput, system, battery overvoltage protectionInput, MOSFET, inductor overcurrent protectionPackage: 32-Pin 4.0 mm × 4.0 mm WQFN
Description
AI
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.
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.