Mfr Part #:

BQ2040

Mfr Name: NA

The BQ2040 is a gas gauge IC from Texas Instruments designed for battery pack integration. It accurately measures available charge in NiCd, NiMH, and Li-Ion batteries.

✓ Total Stock: 99 pcs

$ Price Range: $0.99

BQ2040 Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
PROSOFT ELECTRONICS ✓ Non-Authorised Inventory information	99 pcs On Request	99 pcs	On Request	1	On Request	On Request	06+	On Request	On Request

BQ2040 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

SELECT ALL

Category	New Products
Manufacturer Name	NA
Number of Pins	16
Operating Temperature	0 °C / 70 °C
Voltage	3 V / 6.5 V

View Similar Products (0)

BQ2040 Description

Short technical summary and product information.

The Texas Instruments BQ2040 is a gas gauge IC with an SMBus interface, intended for battery-pack or in-system installation to maintain an accurate record of available battery charge. It directly supports capacity monitoring for NiCd, NiMH, and Li-Ion battery chemistries.

This IC utilizes the System Management Bus v1.0 (SMBus) protocol and supports Smart Battery Data (SBData) commands, including charge control functions. Battery state-of-charge, remaining capacity, remaining time, and chemistry are accessible over the serial link. A four-segment LED display can be driven directly to graphically indicate battery charge state in 25% increments.

The BQ2040 is designed for battery pack integration with low operating current and a compact circuit footprint, fitting on less than ¾ square inch of PCB space. It operates directly from three nickel chemistry cells or can be used with an external regulator for other battery cell configurations. An external EEPROM is required for programming initial values and proper operation.

Packaged in a 16-pin narrow SOIC, the BQ2040 operates within a supply voltage range of 3.0V to 6.5V and an operating temperature range of 0°C to 70°C. It supports battery capacities from 800 mAh to 10000 mAh and is suitable for 2-4 series cells.

BQ2040 Quick Information

Product Type: Gas Gauge IC

Canonical Name: BQ2040 Gas Gauge IC With SMBus Interface

Subcategory: Battery Management

BQ2040 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

BQ2040 Estimated Pricing

Qty	Low	High
1+	$0.99	$0.99

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

BQ2040 Features

Accurate charge measurement for NiCd, NiMH, Li-Ion.
Supports SBS v1.0 data set and two-wire interface.
Drives a four-segment LED display for capacity.
Designed for battery pack integration.
Compact circuit fits on less than ¾ square inch.

BQ2040 Applications

Ideal for portable medical device battery management.
Used in consumer electronics power monitoring systems.
Suitable for industrial tool battery pack tracking.
Integrates into laptop and tablet power management circuits.
Designed for wireless communication equipment battery gauging.

BQ2040 FAQs

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

What battery chemistries does the BQ2040 support?

The BQ2040 directly supports capacity monitoring for NiCd, NiMH, and Li-Ion battery chemistries.

What is the operating voltage range for the BQ2040?

The BQ2040 operates with a supply voltage between 3.0V and 6.5V.

What is the operating temperature range for the BQ2040?

The BQ2040 operates within a temperature range of 0°C to 70°C.

What package type is the BQ2040 available in?

The BQ2040 is available in a 16-pin narrow SOIC package.

What communication interface does the BQ2040 use?

The BQ2040 uses the System Management Bus v1.0 (SMBus) protocol and supports a two-wire interface.

How does the BQ2040 indicate remaining battery capacity?

The BQ2040 drives a four-segment LED display for remaining capacity indication, depicting battery full-to-empty in 25% increments.