Mfr Part #:

BQ29330

The Texas Instruments BQ29330 is an analog front-end IC designed for 2- to 4-series cell lithium-ion and lithium-polymer battery pack protection. It features an I2C-compatible interface and integrated LDOs.

✓ Total Stock: 2,559 pcs

$ Price Range: $0.75

BQ29330 Available from 2 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Optech Co.,Limited ✓ Non-Authorised Inventory information	2,559 pcs On Request	2559 pcs	On Request	1	On Request	On Request	18+	On Request	On Request
HK XINYUANXIN ELECTRONIC TECH LIMITED ✓ Non-Authorised Inventory information	On Request On Request	On Request	On Request	1	On Request	On Request	On Request	On Request	On Request

BQ29330 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Texas Instruments
Operating Temperature Range	-40°C to 110°C

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BQ29330 Description

Short technical summary and product information.

The BQ29330 from Texas Instruments is a versatile analog front-end (AFE) integrated circuit specifically designed for the protection of 2-series, 3-series, and 4-series lithium-ion or lithium-polymer battery packs.

This device offers comprehensive protection features, including 2-tier overcurrent protection and programmable thresholds for overload and short-circuit conditions during both charge and discharge cycles. It supports operation with a 5-mΩ sense resistor and provides NMOS FET drive for charge and discharge control FETs. The BQ29330 can directly interface with bq803x-based gas gauge families and includes watchdog and POR (Power-On Reset) functions for host control.

Key electrical features include an integrated 2.5-V, 16-mA LDO and a 3.3-V, 25-mA LDO. The supply voltage range is from 4.5 V to 28 V, with a typical low supply current of 100 µA. Communication is handled via an I2C-compatible user interface, allowing access to battery information such as individual cell voltages and battery pack voltage.

The BQ29330 is available in a TSSOP (DBT) package with a body size of 7.8 mm × 6.4 mm. Its operating temperature range is -40°C to 110°C, making it suitable for various applications including notebook computers, medical equipment, and instrumentation systems.

BQ29330 Quick Information

Product Type: Battery Protection AFE

Canonical Name: BQ29330 2- to 4-Series Cell Lithium-Ion/Polymer Battery Protection AFE

Subcategory: Analog Front End (AFE)

BQ29330 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

BQ29330 Estimated Pricing

Qty	Low	High
1+	$0.75	$0.75

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

BQ29330 Features

Supports 2, 3, or 4 series cell protection.
Integrated 2.5V and 3.3V LDO regulators.
I2C compatible user interface for data access.
Programmable overcurrent and short-circuit protection.
Wide supply voltage range from 4.5V to 28V.

BQ29330 Applications

Ideal for notebook computer battery packs.
Suitable for medical equipment power systems.
Used in instrumentation and measurement devices.
Enables robust battery management systems.

BQ29330 FAQs

6 frequently asked questions generated from this part’s specifications.

What is the supply voltage range for the BQ29330?

The supply voltage range for the BQ29330 is from 4.5 V to 28 V.

How many series cells does the BQ29330 support?

The BQ29330 supports 2-series, 3-series, or 4-series cells.

What communication interface does the BQ29330 use?

The BQ29330 uses an I2C compatible user interface.

What are the integrated LDO outputs on the BQ29330?

The BQ29330 includes an integrated 2.5-V, 16-mA LDO and a 3.3-V, 25-mA LDO.

What is the typical operating current of the BQ29330?

The typical operating current for the BQ29330 is 100 µA.

What is the operating temperature range for the BQ29330?

The operating temperature range for the BQ29330 is -40°C to 110°C.