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BQ77307

ACTIVE

Low-power protector for 2S to 7S with high accuracy cell voltage measurement

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Data sheet

BQ77307

ACTIVE
Data sheet Order now

Product details

Rating Catalog Number of series cells (max) 7 Number of series cells (min) 2 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 Function Protection Operating current (typ) (µA) 6 Vin (max) (V) 38.5 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 0 Battery overvoltage protection (max) (V) 5.5
Rating Catalog Number of series cells (max) 7 Number of series cells (min) 2 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 Function Protection Operating current (typ) (µA) 6 Vin (max) (V) 38.5 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 0 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

For additional terms or required resources, click any title below to view the detail page where available.

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
Evaluation board
Download options
Package Pins CAD symbols, footprints & 3D models
VQFN (RGR) 20 Ultra Librarian
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Ordering & quality

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