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BQ2003SG4 The BQ2003SG4 is a multi-chemistry battery charger IC from Texas Instruments. It supports NiCd and NiMH batteries with a maximum charge current of 2A.
Mfr Part #:

BQ2003SG4

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The BQ2003SG4 is a multi-chemistry battery charger IC from Texas Instruments. It supports NiCd and NiMH batteries with a maximum charge current of 2A.
✓ Total Stock: 6,898 pcs
$ Price Range: $0.75

BQ2003SG4 Available from 1 distributor

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✓ Non-Authorised
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Components Technology Group, Inc. ✓
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6,898 pcs
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6898 pcs On Request 1 On Request On Request On Request On Request On Request
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BQ2003SG4 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Battery Chemistry
Control Interface
Current
Lead Style
Mounting Type
Operating Temperature
Programmable Features
SVHC Present
Supplier Device Package
Supplier Package
Voltage
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BQ2003SG4 Description

Short technical summary and product information.

The Texas Instruments BQ2003SG4 is a switch-mode buck battery charger IC designed for fast charging and conditioning of nickel cadmium (NiCd) or nickel-metal hydride (NiMH) batteries. It supports 1 to 4 series cells and operates with an input voltage range of 4.5V to 5.5V, with an absolute maximum input voltage of 7V. The device offers a maximum charge current of 2A.

 

Key features include battery temperature monitoring with hot/cold profile detection, and charge termination based on voltage, maximum voltage, maximum temperature, and maximum time. It also provides optional top-off charging. The control interface is standalone and RC-settable, with direct LED outputs for battery and charge status indication. The operating temperature range is -40°C to 85°C.

 

This IC is suitable for integration into systems or use as a stand-alone charger. It features pre-charge qualification based on temperature and voltage. The BQ2003SG4 is available in a 16-SOIC package and is surface-mountable.

 

Note: This product is in the process of being discontinued. New designs should consider an alternate product.

BQ2003SG4 Quick Information

Product Type: Battery Charger IC
Canonical Name: BQ2003SG4 Multi-Chemistry Battery Charger IC
Subcategory: Power Management

BQ2003SG4 Compliance

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

BQ2003SG4 Estimated Pricing

Qty Low High
1+ $0.75 $0.75

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

BQ2003SG4 Features

  • Multi-chemistry NiCd/NiMH battery charger.
  • Switch-mode buck control topology.
  • Input voltage 4.5V to 5.5V.
  • Max charge current of 2A.
  • Temperature and voltage monitoring.

BQ2003SG4 Applications

  • Fast charge control for batteries.
  • Stand-alone battery chargers.
  • System-integrated battery chargers.
  • Battery conditioning and capacity determination.
  • Charging 1 to 4 series cells.

BQ2003SG4 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range for the BQ2003SG4?

4.5 V to 5.5 V (absolute maximum 7 V).

How many cells can the BQ2003SG4 charge?

1, 2, 3, or 4 series cells.

What battery chemistries are supported?

NiCd and NiMH.

What is the maximum charge current?

2 A.

What is the operating temperature range?

-40°C to 85°C.

What package is the BQ2003SG4 available in?

16-SOIC (0.295", 7.50mm Width).

Does the BQ2003SG4 have battery temperature monitoring?

Yes, using a thermistor for hot/cold profile.

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