BQ29311PW Texas Instruments BQ29311PW is a battery protection IC for 3-4 series cell Lithium Ion/Polymer packs. It provides over current, over/under voltage, and short circuit protection with an I²C interface.
Mfr Part #:

BQ29311PW

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
Texas Instruments BQ29311PW is a battery protection IC for 3-4 series cell Lithium Ion/Polymer packs. It provides over current, over/under voltage, and short circuit protection with an I²C interface.
Total Stock: 2,118 pcs
$ Price Range: $3.48

BQ29311PW Available from 1 distributor

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Non-Authorised
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2,118 pcs
2118 pcs On Request 1 On Request On Request 24+ On Request On Request

BQ29311PW Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Battery Chemistry
Fault Protection
Function
Integrated LDO
Interface
Maximum Input Voltage
Mounting Type
Number of Cells
Number of series cells
Operating Current
Operating Temperature
SVHC Present
Supplier Device Package

BQ29311PW Description

Short technical summary and product information.

The Texas Instruments BQ29311PW is a battery protection integrated circuit designed for 3 to 4 series cell Lithium Ion and Lithium Polymer battery packs. It integrates essential protection features including over current, over voltage, under voltage, and short circuit protection to safeguard the battery pack from fault conditions.

 

This device communicates via an I²C interface, allowing for configuration and monitoring by a host controller. It includes an integrated 3.3V, 25mA LDO to power external circuitry. The BQ29311PW operates with a maximum input voltage of 34V and has a typical operating current of 140 µA.

 

The IC is housed in a 24-pin TSSOP package (24-TSSOP) and is designed for surface mount assembly. It supports an operating temperature range of -25°C to 85°C, making it suitable for a variety of portable and industrial battery-powered applications.

BQ29311PW Quick Information

Product Type: Battery Protection IC
Canonical Name: Texas Instruments BQ29311PW Battery Protection IC
Subcategory: Battery Management

BQ29311PW Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BQ29311PW Estimated Pricing

Qty Low High
1+ $3.48 $3.48

Estimated market price range - modelled values for guidance only, not live distributor offers.

BQ29311PW Features

  • Protects 3-4 series Li-Ion/Polymer cells.
  • Provides over current, voltage, and short protection.
  • Communicates via I²C interface.
  • Integrated 3.3V, 25mA LDO regulator.
  • Operates up to 34V maximum input voltage.

BQ29311PW Applications

  • Used in multi-cell Li-Ion battery packs.
  • Ideal for portable electronics battery management.
  • Suitable for power tool battery protection.
  • Applied in industrial battery monitoring systems.

BQ29311PW FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating temperature range of the BQ29311PW?

The operating temperature range is -25°C to 85°C.

What package is the BQ29311PW available in?

The BQ29311PW is available in a 24-TSSOP package.

How many series cells does the BQ29311PW support?

It supports 3 to 4 series cells.

What battery chemistries does the BQ29311PW work with?

It works with Lithium Ion and Lithium Polymer batteries.

What protection features does the BQ29311PW provide?

It provides over current, over/under voltage, and short circuit protection.

What is the maximum input voltage for the BQ29311PW?

The maximum input voltage is 34V.

Does the BQ29311PW have an integrated LDO?

Yes, it has an integrated 3.3V, 25mA LDO.

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