BQ25700A Series
SMBus 1-4 cell NVDC Buck-Boost battery charge controller with system power monitor & processor
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
SMBus 1-4 cell NVDC Buck-Boost battery charge controller with system power monitor & processor
| Part | Battery Chemistry | Operating Temperature [Max] | Operating Temperature [Min] | Supplier Device Package | Function | Number of Cells [Max] [custom] | Number of Cells [Min] [custom] | Fault Protection | Interface | Mounting Type |
|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ25700ARSNR | Multi-Chemistry | 85 °C | -40 °C | 32-QFN (4x4) | Battery Monitor | 4 | 1 | Over Current, Over Temperature, Over Voltage | I2C | Surface Mount |
Texas Instruments BQ25700ARSNT | Multi-Chemistry | 85 °C | -40 °C | 32-QFN (4x4) | Battery Monitor | 4 | 1 | Over Current, Over Temperature, Over Voltage | I2C | Surface Mount |
Key Features
• Charge 1- to 4-Cell Battery From Wide Range of Input Sources3.5-V to 24-V Input Operating VoltageSupports USB2.0, USB 3.0, USB 3.1 (Type C), and USB_PD Input Current SettingsSeamless Transition Between Buck and Boost OperationInput Current and Voltage Regulation (IDPM and VDPM) Against Source OverloadPower/Current Monitor for CPU ThrottlingComprehensivePROCHOTProfile, IMVP8 CompliantInput and Battery Current MonitorSystem Power Monitor, IMVP8 CompliantNarrow-VDC (NVDC) Power Path ManagementInstant-On With No Battery or Deeply Discharged BatteryBattery Supplements System When Adapter is Fully-LoadedPower Up USB Port From Battery (USB OTG)Output 4.48-V to 20.8-V Compatible With USB PDOutput Current Limit up to 6.35 A800-kHz or 1.2-MHz Programmable Switching Frequency for 1-µH to 3.3-µH InductorHost Control Interface for Flexible System ConfigurationSMBus (bq25700A) Port for Optimal System Performance and Status ReportingHardware Pin to Set Input Current Limit Without EC ControlIntegrated ADC to Monitor Voltage, Current and PowerHigh Accuracy Regulation and Monitor±0.5% Charge Voltage Regulation±2% Input/Charge Current Regulation±2% Input/Charge Current Monitor±5% Power MonitorSafetyThermal ShutdownInput, System, Battery Overvoltage ProtectionMOSFET Inductor Overcurrent ProtectionLow Battery Quiescent CurrentInput Current Optimizer (ICO) to Extract Max Input PowerCharge Any Battery Chemistry: Li+, LiFePO4, NiCd, NiMH, Lead AcidPackage: 32-Pin 4 × 4 WQFNCharge 1- to 4-Cell Battery From Wide Range of Input Sources3.5-V to 24-V Input Operating VoltageSupports USB2.0, USB 3.0, USB 3.1 (Type C), and USB_PD Input Current SettingsSeamless Transition Between Buck and Boost OperationInput Current and Voltage Regulation (IDPM and VDPM) Against Source OverloadPower/Current Monitor for CPU ThrottlingComprehensivePROCHOTProfile, IMVP8 CompliantInput and Battery Current MonitorSystem Power Monitor, IMVP8 CompliantNarrow-VDC (NVDC) Power Path ManagementInstant-On With No Battery or Deeply Discharged BatteryBattery Supplements System When Adapter is Fully-LoadedPower Up USB Port From Battery (USB OTG)Output 4.48-V to 20.8-V Compatible With USB PDOutput Current Limit up to 6.35 A800-kHz or 1.2-MHz Programmable Switching Frequency for 1-µH to 3.3-µH InductorHost Control Interface for Flexible System ConfigurationSMBus (bq25700A) Port for Optimal System Performance and Status ReportingHardware Pin to Set Input Current Limit Without EC ControlIntegrated ADC to Monitor Voltage, Current and PowerHigh Accuracy Regulation and Monitor±0.5% Charge Voltage Regulation±2% Input/Charge Current Regulation±2% Input/Charge Current Monitor±5% Power MonitorSafetyThermal ShutdownInput, System, Battery Overvoltage ProtectionMOSFET Inductor Overcurrent ProtectionLow Battery Quiescent CurrentInput Current Optimizer (ICO) to Extract Max Input PowerCharge Any Battery Chemistry: Li+, LiFePO4, NiCd, NiMH, Lead AcidPackage: 32-Pin 4 × 4 WQFN
Description
AI
The bq25700A is a synchronous NVDC battery buck-boost charge controller, offering low component count, high efficiency solution for space-constraint, multi-chemistry battery charging applications.
The NVDC-1 configuration allows the system to be regulated at battery voltage, but not drop below system minimum voltage. The system keeps operating even when the battery is completely discharged or removed. When load power exceeds input source rating, the battery goes into supplement mode and prevents the system from crashing.
The bq25700A charges battery from a wide range of input sources including USB adapter, high voltage USB PD sources and traditional adapters.
During power up, the charger sets converter to buck, boost or buck-boost configuration based on input source and battery conditions. The charger automatically transits among buck, boost and buck-boost configuration without host control.
In the absence of an input source, the bq25700A supports On-the-Go (OTG) function from 1- to 4-cell battery to generate 4.48 V to 20.8 V on VBUS. During OTG mode, the charger regulates output voltage and output current.
The bq25700A monitors adapter current, battery current and system power. The flexibly programmedPROCHOToutput goes directly to CPU for throttle back when needed.
The bq25700A is a synchronous NVDC battery buck-boost charge controller, offering low component count, high efficiency solution for space-constraint, multi-chemistry battery charging applications.
The NVDC-1 configuration allows the system to be regulated at battery voltage, but not drop below system minimum voltage. The system keeps operating even when the battery is completely discharged or removed. When load power exceeds input source rating, the battery goes into supplement mode and prevents the system from crashing.
The bq25700A charges battery from a wide range of input sources including USB adapter, high voltage USB PD sources and traditional adapters.
During power up, the charger sets converter to buck, boost or buck-boost configuration based on input source and battery conditions. The charger automatically transits among buck, boost and buck-boost configuration without host control.
In the absence of an input source, the bq25700A supports On-the-Go (OTG) function from 1- to 4-cell battery to generate 4.48 V to 20.8 V on VBUS. During OTG mode, the charger regulates output voltage and output current.
The bq25700A monitors adapter current, battery current and system power. The flexibly programmedPROCHOToutput goes directly to CPU for throttle back when needed.