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BQ2040SN-C408TR The BQ2040SN-C408TR 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.
Mfr Part #:

BQ2040SN-C408TR

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The BQ2040SN-C408TR 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: 3,500 pcs
$ Price Range: $0.75

BQ2040SN-C408TR Available from 1 distributor

✓ 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
3,500 pcs
On Request
3500 pcs On Request 1 On Request On Request 00+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

BQ2040SN-C408TR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Battery Chemistry
Fault Protection
Function
Interface
Mounting Type
Operating Temperature
Supplier Device Package
Supplier Package
Supply Voltage
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BQ2040SN-C408TR Description

Short technical summary and product information.

The Texas Instruments BQ2040SN-C408TR 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 operates with a supply voltage range of 3.0V to 6.5V and has an operating temperature range of 0°C to 70°C (TA). It features an SMBus interface for communication and supports SBS v1.0 data sets and charge control commands. The device can monitor the charge FET in Li-Ion pack protection circuits and drives a four-segment LED display for remaining capacity indication.

 

Designed for battery pack integration, the BQ2040SN-C408TR has a low operating current and its complete circuit can fit on less than ¾ square inch of PCB space. It estimates battery self-discharge based on an internal timer and temperature sensor, and automatically recalibrates battery capacity during discharge cycles. The device is supplied in a 16-pin narrow SOIC package and is designed for surface mount applications.

 

Key features include accurate charge measurement for multiple battery chemistries, SMBus communication, and LED display output for capacity indication. It also includes fault protection for over current, over temperature, and over/under voltage conditions.

BQ2040SN-C408TR Quick Information

Product Type: Gas Gauge IC
Canonical Name: BQ2040 Gas Gauge IC With SMBus Interface
Subcategory: Battery Management

BQ2040SN-C408TR Compliance

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

BQ2040SN-C408TR Estimated Pricing

Qty Low High
1+ $0.75 $0.75

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

BQ2040SN-C408TR Features

  • Accurate charge measurement for multiple battery chemistries.
  • Supports SMBus v1.0 data set and two-wire interface.
  • Drives a four-segment LED display for capacity.
  • Designed for battery pack integration.
  • 16-pin narrow SOIC surface mount package.

BQ2040SN-C408TR Applications

  • Monitors charge in NiCd, NiMH, and Li-Ion batteries.
  • Used in battery-pack or in-system installations.
  • Provides battery state-of-charge indication.
  • Supports smart battery data commands.

BQ2040SN-C408TR FAQs

6 frequently asked questions generated from this part’s specifications.
What is the supply voltage range for the BQ2040SN-C408TR?

3.0V to 6.5V.

What package is the BQ2040SN-C408TR available in?

16-SOIC (0.154", 3.90mm width) surface mount.

What is the operating temperature range?

0°C to 70°C.

What battery chemistries does the BQ2040SN-C408TR support?

Multi-chemistry, including NiCd, NiMH, and Li-Ion.

What interface does the BQ2040SN-C408TR use?

SMBus.

What fault protections are included?

Over current, over temperature, and over/under voltage.

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