Battery protectors

Reliable battery protection with advanced precision and integration

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We understand performance and safety are major care-abouts for battery packs with lithium-based (li-ion and li-polymer) chemistries. That is why we design our battery protection ICs to detect a variety of fault conditions including overvoltage, undervoltage, discharge overcurrent and short circuit in single-cell and multi-cell batteries, so you can enhance the safety of your battery pack.

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Find your battery protector

BQ294534 NEW

4.55-V overvoltage protection (OVP) device for two-series and three-Series cell Li-ion batteries

Approx. price (USD) 1ku | 0.18

BQ77207 NEW

3-series to 7-series cell Li-ion battery, internal delay timer, voltage and temperature protector

Approx. price (USD) 1ku | 0.6

Technical resources

How to stack non-automotive protectors and monitors
Learn how our battery monitors and protectors can be used in a stacked configuration.
Design considerations for high-cell-count battery packs in industrial applications
Watch this video to understand the pros and cons of basic system configurations, including gauges, monitors and primary or secondary protectors while offering examples for different battery types.
Battery Protector, Monitor or Gauge?
Get a short overview of system requirements to help you choose a battery protector, monitor or gauge.

Design & development resources

Reference design
10s-16s battery pack reference design with accurate cell measurement and high-side MOSFET control
This reference design is a low standby and ship-mode current consumption and high cell voltage accuracy 10s–16s Lithium-ion (Li-ion), LiFePO4 battery pack design. It monitors each cell voltage, pack current, cell and MOSFET temperature with high accuracy and protects the Li-ion, LiFePO4 (...)
Reference design
Stacked Overvoltage Battery Protector Reference Design
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 (...)
Reference design
Single cell Li-Ion/Li Polymer Battery protection IC Reference Design

The bq297xy device provides the protection functions for Li-Ion/Li-Polymer cells, and monitors across the external power FETs for protection due to high charge or discharge currents. In addition, there is overcharge and depleted battery monitoring and protection. These features are implemented with (...)

Reference designs related to Battery protectors

Use our reference design selection tool to find designs that best match your application and parameters.