Product details

Function Protection Number of series cells (min) 2, 3, 4, 5 Number of series cells (max) 3, 4, 5 Features Overvoltage, Single pin output drive, Stackable Operating current (typ) (µA) 1 Rating Catalog Vin (max) (V) 25 TI functional safety category Functional Safety-Capable Overvoltage protection 3.85, 3.95, 4.2, 4.225, 4.275, 4.3, 4.35, 4.45 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 3.85 Battery overvoltage protection (max) (V) 4.65
Function Protection Number of series cells (min) 2, 3, 4, 5 Number of series cells (max) 3, 4, 5 Features Overvoltage, Single pin output drive, Stackable Operating current (typ) (µA) 1 Rating Catalog Vin (max) (V) 25 TI functional safety category Functional Safety-Capable Overvoltage protection 3.85, 3.95, 4.2, 4.225, 4.275, 4.3, 4.35, 4.45 Operating temperature range (°C) -40 to 110 Battery overvoltage protection (min) (V) 3.85 Battery overvoltage protection (max) (V) 4.65
WSON (DPJ) 8 12 mm² 4 x 3
  • 2-, 3-, 4-, and 5-series cell overvoltage protection
  • Internal delay timer
  • Fixed OVP threshold
  • High-accuracy overvoltage protection: ± 10 mV
  • Low power consumption ICC ≈ 1 µA (VCELL(ALL) < VPROTECT)
  • Low leakage current per cell input < 100 nA
  • Functional Safety-Capable
  • Package footprint options:
    • Small 8-pin QFN (3.00 mm × 4.00 mm)
    • Leaded 8-pin MSOP (3.00 mm × 5.00 mm, including leads)
  • 2-, 3-, 4-, and 5-series cell overvoltage protection
  • Internal delay timer
  • Fixed OVP threshold
  • High-accuracy overvoltage protection: ± 10 mV
  • Low power consumption ICC ≈ 1 µA (VCELL(ALL) < VPROTECT)
  • Low leakage current per cell input < 100 nA
  • Functional Safety-Capable
  • Package footprint options:
    • Small 8-pin QFN (3.00 mm × 4.00 mm)
    • Leaded 8-pin MSOP (3.00 mm × 5.00 mm, including leads)

The BQ7718xy family of products provides an overvoltage monitor and protector for Li-Ion battery pack systems. Each cell is monitored independently for an overvoltage condition. For quicker production-line testing, the BQ7718xy device provides a Customer Test Mode (CTM) with greatly reduced delay time.

In the BQ7718xy device, an internal delay timer is initiated upon detection of an overvoltage condition on any cell. Upon expiration of the delay timer, the output is triggered into its active state (either high or low depending on the configuration).

The BQ7718xy family of products provides an overvoltage monitor and protector for Li-Ion battery pack systems. Each cell is monitored independently for an overvoltage condition. For quicker production-line testing, the BQ7718xy device provides a Customer Test Mode (CTM) with greatly reduced delay time.

In the BQ7718xy device, an internal delay timer is initiated upon detection of an overvoltage condition on any cell. Upon expiration of the delay timer, the output is triggered into its active state (either high or low depending on the configuration).

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Design & development

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

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The BQ76942EVM evaluation module (EVM) is a complete evaluation system for the BQ76942, a 3-cell to 10-cell Li-Ion battery monitor integrated circuit. The EVM consists of a BQ76942 circuit module which is used for simple evaluation of the BQ76942 monitor function. The circuit module includes one (...)

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Evaluation board

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User guide: PDF
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Reference designs

TIDA-010030 — Accurate gauging and 50-μA standby current, 13-S, 48-V li-ion battery pack reference design

This reference design is a low standby and ship mode current consumption and high SOC gauging accuracy 13S, 48-V Li-ion battery pack design. It monitors each cell voltage, pack current and temperature with high accuracy and protects the Li-ion battery pack against overvoltage, undervoltage, over (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00108 — Stacked Overvoltage Battery Protector Reference Design

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Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
WSON (DPJ) 8 Ultra Librarian

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