Product details

Function Protection Number of series cells (min) 2, 3, 4, 5 Number of series cells (max) 3, 4, 5 Features Open wire (OW), Overvoltage, Single pin output drive, Stackable Rating Catalog Vin (max) (V) 30 Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 3.55 Battery overvoltage protection (max) (V) 5.1
Function Protection Number of series cells (min) 2, 3, 4, 5 Number of series cells (max) 3, 4, 5 Features Open wire (OW), Overvoltage, Single pin output drive, Stackable Rating Catalog Vin (max) (V) 30 Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 3.55 Battery overvoltage protection (max) (V) 5.1
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • 3-series cell to 5-series cell protection
  • High-accuracy overvoltage protection
    • ±10 mV at 25°C
    • ±20 mV from 0°C to 60°C
  • Overvoltage protection options from 3.55 V to 5.1 V
  • Open-wire connection detection
  • Random cell connection
  • Functional safety-capable
  • Fixed internal delay timers
  • Fixed detection thresholds
  • Fixed output drive type
    • Active high or active low
    • Active high drive to 6 V
    • Open drain with the ability to be pulled up externally to VDD
  • Low power consumption ICC ≈ 1 µA (VCELL(ALL) < VOV)
  • Low leakage current per cell input < 100 nA with open wire detection disabled
  • Package footprint options:
    • 8-pin DGK with 0.65-mm lead pitch
  • 3-series cell to 5-series cell protection
  • High-accuracy overvoltage protection
    • ±10 mV at 25°C
    • ±20 mV from 0°C to 60°C
  • Overvoltage protection options from 3.55 V to 5.1 V
  • Open-wire connection detection
  • Random cell connection
  • Functional safety-capable
  • Fixed internal delay timers
  • Fixed detection thresholds
  • Fixed output drive type
    • Active high or active low
    • Active high drive to 6 V
    • Open drain with the ability to be pulled up externally to VDD
  • Low power consumption ICC ≈ 1 µA (VCELL(ALL) < VOV)
  • Low leakage current per cell input < 100 nA with open wire detection disabled
  • Package footprint options:
    • 8-pin DGK with 0.65-mm lead pitch

The BQ77205 family of products provides a range of voltage and temperature monitoring, including overvoltage protection (OVP) and open-wire (OW) protection for Li-ion battery pack systems. Each cell is monitored independently for overvoltage and open-wire conditions.

In the BQ77205 device, an internal delay timer is initiated upon detection of an overvoltage or open-wire condition. Upon expiration of the delay timer, the respective output is triggered into its active state (either high or low, depending on the configuration).

The overvoltage triggers the OUT pin if a fault is detected. If an open-wire fault is detected, then the OUT is triggered. For quicker production-line testing, the BQ77205 device provides a Customer Test Mode (CTM) with significantly reduced delay time.

The BQ77205 family of products provides a range of voltage and temperature monitoring, including overvoltage protection (OVP) and open-wire (OW) protection for Li-ion battery pack systems. Each cell is monitored independently for overvoltage and open-wire conditions.

In the BQ77205 device, an internal delay timer is initiated upon detection of an overvoltage or open-wire condition. Upon expiration of the delay timer, the respective output is triggered into its active state (either high or low, depending on the configuration).

The overvoltage triggers the OUT pin if a fault is detected. If an open-wire fault is detected, then the OUT is triggered. For quicker production-line testing, the BQ77205 device provides a Customer Test Mode (CTM) with significantly reduced delay time.

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BQ77207 ACTIVE 3-series to 7-series cell Li-ion battery, internal delay timer, voltage and temperature protector Can protect up to seven-series cell with undervoltage and temperature protections in addition to overvoltage and open wire

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* Data sheet BQ77205 Overvoltage Protection for 3-Series to 5-Series Cell Li-Ion Batteries with Internal Delay Timer datasheet (Rev. A) PDF | HTML 05 Jun 2024

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Evaluation board

BQ77207EVM — BQ77207 evaluation module 3-series to 7-series cell Li-ion battery voltage and temperature protector

The BQ77207EVM evaluation module (EVM) is a complete evaluation system for the BQ77207, a 3-series to 7-series cell Li-Ion battery protection integrated circuit.  The circuit module includes one BQ77207 integrated circuit (IC), thermistor, and all other onboard components necessary to signal (...)

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