BQ25708 Series
SMBus Multi-Chemistry battery Buck-Boost charge controller
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
SMBus Multi-Chemistry battery Buck-Boost charge controller
| Part | Interface | Fault Protection | Battery Pack Voltage | Mounting Type | Battery Chemistry | Charge Current - Max [Max] | Voltage - Supply (Max) [Max] | Operating Temperature [Min] | Operating Temperature [Max] | Number of Cells [Max] [custom] | Number of Cells [Min] [custom] | Current - Charging | Supplier Device Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ25708RSNT | SMBus | Over Temperature, Over Voltage, Short Circuit | 19.2 V | Surface Mount | Multi-Chemistry | 8.128 A | 24 V | -40 °C | 155 °C | 4 | 1 | Constant | 32-QFN (4x4) |
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-LoadedIdeal Diode Operation in Supplement Mode800-kHz or 1.2-MHz Programmable Switching Frequency for 1-µH to 3.3-µH InductorHost Control Interface for Flexible System ConfigurationSMBus 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-LoadedIdeal Diode Operation in Supplement Mode800-kHz or 1.2-MHz Programmable Switching Frequency for 1-µH to 3.3-µH InductorHost Control Interface for Flexible System ConfigurationSMBus 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 bq25708 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 bq25708 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.
The bq25708 monitors adapter current, battery current and system power. The flexibly programmedPROCHOToutput goes directly to CPU for throttle back when needed.
The bq25708 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 bq25708 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.
The bq25708 monitors adapter current, battery current and system power. The flexibly programmedPROCHOToutput goes directly to CPU for throttle back when needed.