Product details

Function Protection Number of series cells (min) 2 Number of series cells (max) 7 Features FET drive, Low-side driver, Open wire (OW), Over-temperature (OT), Overcurrent during charge (OCC), Overcurrent during discharge (OCD), Overvoltage, Short-circuit Discharge (SCD), Under-temperature (UT), Undervoltage Operating current (typ) (µA) 6 Rating Catalog Vin (max) (V) 38.5 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 1 Battery overvoltage protection (max) (V) 5.5
Function Protection Number of series cells (min) 2 Number of series cells (max) 7 Features FET drive, Low-side driver, Open wire (OW), Over-temperature (OT), Overcurrent during charge (OCC), Overcurrent during discharge (OCD), Overvoltage, Short-circuit Discharge (SCD), Under-temperature (UT), Undervoltage Operating current (typ) (µA) 6 Rating Catalog Vin (max) (V) 38.5 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 1 Battery overvoltage protection (max) (V) 5.5
VQFN (RGR) 20 12.25 mm² 3.5 x 3.5
  • Primary or secondary voltage, current, and temperature protection for 2-series to 7-series cells with an autonomous recovery option
  • Voltage protection:
    • Cell overvoltage (COV): 0 V–5.5 V in 1-mV steps, ±4-mV accuracy
    • Cell undervoltage (CUV): 0 V–5.5 V in 1-mV steps, ±4-mV accuracy
  • Current protection:
    • Short circuit in discharge (SCD): 10 mV–500 mV, varying steps
    • Overcurrent in charge (OCC): 3 mV–123 mV, 2-mV steps
    • Overcurrent in discharge 1 and 2 (OCD1 and OCD2): 4 mV–200 mV, 2-mV steps
  • Temperature protection using external NTC thermistor:
    • Overtemperature in charge and discharge (OTC and OTD)
    • Undertemperature in charge and discharge (UTC and UTD)
    • Internal die overtemperature
  • Integrated low-side drivers for NFET protection with an optional autonomous recovery
  • Low power operation:
    • NORMAL mode, both FETs enabled: 8 µA
    • NORMAL mode, FETs disabled: 5 µA
    • SHUTDOWN Mode: < 1 µA
  • High voltage tolerance of 45 V on cell connect and select additional pins
  • Integrated one-time-programmable (OTP) memory for device settings, programmed by TI
  • Programmable interrupt for host processor, status information available through I 2C
  • 400-kHz I 2C serial communications with optional CRC support
  • Programmable LDO for external system usage
  • 20-pin QFN 3.5 mm × 3.5 mm × 0.9 mm (RGR) package
  • Primary or secondary voltage, current, and temperature protection for 2-series to 7-series cells with an autonomous recovery option
  • Voltage protection:
    • Cell overvoltage (COV): 0 V–5.5 V in 1-mV steps, ±4-mV accuracy
    • Cell undervoltage (CUV): 0 V–5.5 V in 1-mV steps, ±4-mV accuracy
  • Current protection:
    • Short circuit in discharge (SCD): 10 mV–500 mV, varying steps
    • Overcurrent in charge (OCC): 3 mV–123 mV, 2-mV steps
    • Overcurrent in discharge 1 and 2 (OCD1 and OCD2): 4 mV–200 mV, 2-mV steps
  • Temperature protection using external NTC thermistor:
    • Overtemperature in charge and discharge (OTC and OTD)
    • Undertemperature in charge and discharge (UTC and UTD)
    • Internal die overtemperature
  • Integrated low-side drivers for NFET protection with an optional autonomous recovery
  • Low power operation:
    • NORMAL mode, both FETs enabled: 8 µA
    • NORMAL mode, FETs disabled: 5 µA
    • SHUTDOWN Mode: < 1 µA
  • High voltage tolerance of 45 V on cell connect and select additional pins
  • Integrated one-time-programmable (OTP) memory for device settings, programmed by TI
  • Programmable interrupt for host processor, status information available through I 2C
  • 400-kHz I 2C serial communications with optional CRC support
  • Programmable LDO for external system usage
  • 20-pin QFN 3.5 mm × 3.5 mm × 0.9 mm (RGR) package
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* Data sheet BQ77307 2-Series to 7-Series High Accuracy Battery Primary or Secondary Protector for Li-Ion, Li-Polymer, LiFePO4(LFP), and LTO Battery Packs datasheet PDF | HTML 08 Dec 2023
User guide BQ77307 Technical Reference Manual PDF | HTML 06 Dec 2023

Design & development

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Application software & framework

BQSTUDIO-TEST Battery Management Studio (bqStudio) Software – Beta version downloads

Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)

Supported products & hardware

Supported products & hardware

Products
Battery monitors & balancers
BQ76905 Low-power monitor and protector for 2S to 5S with high accuracy cell voltage measurement BQ76907 Low-power monitor and protector for 2S to 7S with high accuracy cell voltage measurement BQ769142 3-s to 14-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4 battery BQ76942 3-series to 10-series multicell battery monitor and protector BQ76952 3-s to 16-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4 BQ76972 3s-to-16s high-accuracy battery monitor and protector for Li-ion, Li-poly and LiFePO4
Battery charger ICs
BQ24800 SMBus 1-4 cell Buck battery charge controller to support hybrid power boost and battery boost mode BQ25720 SMBus 1- to 4-cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG BQ25723 I²C 1-4 cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG BQ25731 I2C 1-5 cell NVDC buck-boost battery charge controller with USB type-C PD support BQ25756 Stand-alone or I²C-controlled 70-V bidirectional buck-boost charge controller with MPPT BQ25790 Integrated, NVDC, 5-A 1-cell to 4-cell switch-mode buck-boost battery charger BQ25792 I2C controlled, 5-A, 1-4 cell buck-boost charger with dual-input selector and USB PD 3.0 OTG output
Battery fuel gauges
BQ27220 Single cell pack/system-side CEDV battery fuel (gas) gauge w/pre-programmed chemistry profiles BQ27320 Single cell pack/System-side CEDV battery fuel (gas) gauge BQ27425-G1 System-side Impedance Track™; fuel gauge with direct battery connection | gas gauge battery BQ27425-G2A System-side Impedance Track™; fuel gauge for LiCoO2 battery BQ27425-G2B System-side Impedance Track™; fuel gauge LiMn2O4 battery BQ27427 Single-cell battery fuel gauge with pre-programmed chemistry and integrated sense resistor BQ27520-G4 System side Impedance Track™ fuel gauge with integrated LDO. BQ27530-G1 System-side Impedance-Track fuel (gas) gauge with direct battery connection BQ27531-G1 Battery management unit Impedance Track™ fuel (gas) gauge for bq2419x charger controller BQ27532-G1 Battery management unit Impedance Track™ fuel gauge for bq2425x charger BQ27545-G1 Single cell, pack side, Impedance Track™ fuel gauge BQ27546-G1 Single cell Impedance Track™ pack side fuel gauge with DSBGA package BQ27621-G1 System-side fuel gauge with Dynamic Voltage Correlation, battery gas gauge BQ27741-G1 Pack-side Impedance Track™(tm) fuel (gas) gauge with integrated protector BQ27742-G1 Single cell Li-ion battery fuel gauge with integrated protection | battery gas gauge BQ27Z561 Impedance Track™ integrated circuit gas gauge solution for 1-series BQ27Z746 Pack-side, single-cell Impedance Track™ technology fuel gauge with integrated protector BQ28Z610 Battery fuel gauge with integrated protector for 1-2 series packs BQ34110 Multi-chemistry high-cell Count battery fuel gauge with integrated rarely discharged module BQ34210-Q1 Automotive Qualified Single cell system-side CEDV fuel gauge BQ34Z100-G1 Multi-chemistry Impedance Track™ standalone fuel gauge | battery gas gauge BQ35100 Battery fuel gauge for non-rechargeable batteries (lithium primary) and end-of-service monitor BQ4050 1-4 series CEDV battery fuel (gas) gauge BQ40Z50 1-4 series Li-ion battery pack manager | battery fuel (gas) gauge BQ40Z50-R1 1-4 series Li-ion battery pack manager supporting Turbo Mode 1.0 BQ40Z50-R2 1-4 series Li-ion battery pack manager supporting Turbo Mode 2.0 BQ40Z60 Complete multi-cell battery manager | battery fuel (gas) gauge BQ40Z80 2-s to 6-s battery pack manager with Impedance Track™ gas gauging BQ78350 Companion CEDV Fuel Gauge Battery Management Controller for bq76940 Monitor Family BQ78350-R1 CEDV li-ion gas gauge and battery management controller BQ78Z100 Impedance Track™ battery fuel (gas) gauge for 1-series to 2-series
Battery protectors
BQ77307 Low-power protector for 2S to 7S with high accuracy cell voltage measurement
Hardware development
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Download options
Package Pins CAD symbols, footprints & 3D models
VQFN (RGR) 20 Ultra Librarian

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
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  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

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