# BQ2040 - Texas Instruments Gas Gauge IC

## Product Summary

The Texas Instruments BQ2040 is a gas gauge IC designed for battery pack integration. It provides accurate charge measurement for NiCd, NiMH, and Li-Ion batteries.

## Product Information

| Field | Value |
| --- | --- |
| Part Number | BQ2040 |
| Manufacturer | Texas Instruments |
| Product Type | Gas Gauge IC |
| Category | Uncategorized |
| Subcategory | Battery Management |
| Package | SOIC |

## Description

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.

Key features include support for the SBS v1.0 data set and a two-wire interface. The BQ2040 monitors the charge FET in Li-Ion pack protection circuits and can drive a four-segment LED display for remaining capacity indication. It operates from a 3.0V to 6.5V supply voltage and has an operating temperature range of 0°C to 70°C.

Designed for battery pack integration, the BQ2040 offers low operating current and a complete circuit that can fit on less than 3/4 square inch of PCB space. It supports SBS charge control commands for NiCd, NiMH, and Li-Ion batteries. Battery state-of-charge, remaining capacity, and remaining time are available over the serial link.

This IC is available in a 16-pin narrow SOIC package. It supports battery capacities ranging from a minimum of 800 mAh to a maximum of 10000 mAh and can manage 2-4 series cells.

## Key Specifications

| Specification | Value |
| --- | --- |
| Number of Pins | 16 |
| Operating Temperature | 0 °C to 70 °C |
| Voltage | 3 V to 6.5 V |

## Availability and Pricing

| Field | Value |
| --- | --- |
| Stock Status | In Stock |
| Distributor Count | 1 |
| Total Stock | 239 |
| Price | $0.75 |
| Pricing Available | Yes |

## Estimated Pricing

| Quantity | Price Range |
| ---: | ---: |
| 1+ | $0.75 |

Estimated pricing is for guidance only and is not a live distributor offer.

## Distributor Offers

| Distributor | Stock | Unit Price | MOQ | Lead Time | Last Updated |
| --- | --- | --- | --- | --- | --- |
| PROSOFT ELECTRONICS | 239 |  |  |  |  |

## Features

- Accurate charge measurement for NiCd, NiMH, Li-Ion
- Supports SBS v1.0 data set and two-wire interface
- Monitors charge FET in Li-Ion protection circuits
- Drives a four-segment LED display for capacity
- Low operating current for battery pack integration

## Applications

- Battery pack charge monitoring
- In-system battery management
- Portable electronic devices
- Smart battery systems

## Compliance

| Field | Value |
| --- | --- |
| RoHS Status | RoHS3 Compliant |
| REACH Status | REACH Unaffected |
| Moisture Sensitivity Level | 1 Unlimited |

## Documents and Media

- Datasheet: https://static.distyparts.com/disty-files/datasheets/d7/d1/f4/BQ2040
- Image: https://static.distyparts.com/disty-files/images/ba/8d/c7/d0016a.png
- Product Page: https://distyparts.com/product/bq2040
- RFQ URL: https://distyparts.com/product/bq2040#rfq

## FAQs

### 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 from a supply voltage of 3.0 V to 6.5 V.

### What is the operating temperature range for the BQ2040?

The BQ2040 has an operating temperature range of 0°C to 70°C.

### What communication interface does the BQ2040 use?

The BQ2040 uses the System Management Bus v1.0 (SMBus) protocol and supports the Smart Battery Data (SBData) commands.

### What is the package type for the BQ2040?

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

### What is the minimum and maximum supported battery capacity?

The BQ2040 supports a minimum battery capacity of 800 mAh and a maximum of 10000 mAh.

## Related Pages

- Manufacturer: https://distyparts.com/manufacturer/texas-instruments
- Category: https://distyparts.com/category/uncategorized/new-products
- Product Page: https://distyparts.com/product/bq2040
- Markdown File: https://distyparts.com/product/bq2040.md
- TXT File: https://distyparts.com/product/bq2040.txt