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Product details

Parameters

Function Protection Number of series cells (Min) 2 Number of series cells (Max) 5 Features 2-series protection, 3-series protection, 4-series protection, 5-series protection, Over-voltage (OV), Internal delay timer, Single pin output drive Typical operating current (Typ) (uA) 1 Rating Catalog Vin (Max) (V) 25 TI functional safety category Functional Safety-Capable open-in-new Find other Battery protectors

Package | Pins | Size

WSON (DPJ) 8 12 mm² 4 x 3 open-in-new Find other Battery protectors

Features

  • 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)

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Description

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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Technical documentation

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
149
Description
The bq40z80 EVM includes one bq40z80, two bq771807 secondary protectors, and a link to Microsoft Windows based PC software, which can be used to monitor and predict capacity, perform cell balancing, monitor critical parameters, protect the cells from overcharge, over-discharge, short circuit, and (...)
Features
  • 2s-7s battery gauging with protection
  • Supports internal and external cell balancing
  • Multiple GPIOs and LED support
  • Protection features include:
    • Oover and under voltage
    • Short circuit in charge and discharge
    • Charge and pre-charge timeout
    • Over and under temperaure
EVALUATION BOARDS Download
document-generic User guide
249
Description
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 (...)
Features
  • Complete evaluation system for the BQ76942 3-cell to 10-cell Li-Ion and Phosphate battery monitor
  • Populated circuit module for 10-cell configuration for quick setup
  • Communication available with included USB interface adapter or available on 4-pin connector
  • Resistor cell simulator for operation with (...)
EVALUATION BOARDS Download
document-generic User guide
249
Description
The BQ76952EVM evaluation module (EVM) is a complete evaluation system for the BQ76952, a 3-cell to 16-cell Li-Ion battery monitor integrated circuit. The EVM consists of a BQ76952 circuit module which is used for simple evaluation of the BQ76952 monitor function. The circuit module includes one (...)
Features
  • Complete evaluation system for the BQ76952 3-cell to 16-cell Li-Ion and Phosphate battery monitor
  • Populated circuit module for 16-cell configuration for quick setup
  • Communication available with included USB interface adapter or available on 4-pin connector
  • Resistor cell simulator for operation with (...)

Reference designs

REFERENCE DESIGNS Download
Stacked Overvoltage Battery Protector Reference Design
TIDA-00108 — The secondary level protectors for 48V-60V  battery systems are being mandated in industrial applications. The TIDA-00108 reference design introduces the user to implement a robust stacked architecture, without compromising high accuracy voltage detection system for a 10s-15s series (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Accurate gauging and 50-μA standby current, 13-S, 48-V li-ion battery pack reference design
TIDA-010030 — 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
WSON (DPJ) 8 View options

Ordering & quality

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