BQ24105IRHLRQ1 The Texas Instruments BQ24105IRHLRQ1 is a standalone automotive battery charger IC designed for 1-3 cell Li-Ion and Li-Polymer battery packs. It offers a maximum charge current of 2A.
Mfr Part #:

BQ24105IRHLRQ1

Available from 4 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments BQ24105IRHLRQ1 is a standalone automotive battery charger IC designed for 1-3 cell Li-Ion and Li-Polymer battery packs. It offers a maximum charge current of 2A.
✓ Total Stock: 15,998 pcs
$ Price Range: $3.96

BQ24105IRHLRQ1 Available from 4 distributors

✓ Authorised
✓ Non-Authorised

BQ24105IRHLRQ1 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Battery Chemistry
Battery Pack Voltage
Charge Current
Control Interface
Current
Duty Cycle
Fault Protection
Input Voltage
Mounting Type
Number of Cells
Operating Temperature
Programmable Features
Supplier Device Package
Supplier Package
Voltage

BQ24105IRHLRQ1 Description

Short technical summary and product information.

The BQ24105IRHLRQ1 from Texas Instruments is a highly efficient, standalone buck battery charger IC qualified for automotive applications. It is designed for charging single-, two-, or three-cell Li-Ion and Li-Polymer battery packs, and can also be used for LiFePO4 batteries.

 

This device integrates a synchronous fixed-frequency PWM controller operating at 1.1 MHz with a 0% to 100% duty cycle. It features integrated power FETs for up to a 2A charge rate, providing high-accuracy voltage and current regulation. The charger operates with an input voltage range of 4.35V to 16V and supports battery charge voltages from 2.1V to 15.5V.

 

Key features include AEC-Q100 automotive qualification, battery temperature monitoring via thermistor, input overvoltage protection (OVP), and status outputs for charge indication and fault reporting. It also includes automatic sleep mode for low power consumption, reverse leakage protection, and thermal shutdown protection.

 

The BQ24105IRHLRQ1 is available in a 20-pin VQFN package measuring 3.5 mm x 4.5 mm, suitable for surface mount applications.

BQ24105IRHLRQ1 Quick Information

Product Type: Battery Charger
Series: BQ24105-Q1
Canonical Name: BQ24105IRHLRQ1 Standalone Automotive 1-3 Cell 2A Buck Battery Charger
Subcategory: PMIC

BQ24105IRHLRQ1 Compliance

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

BQ24105IRHLRQ1 Estimated Pricing

Qty Low High
1+ $3.96 $3.96

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

BQ24105IRHLRQ1 Features

  • Standalone automotive 1-3 cell 2A buck battery charger.
  • Integrated synchronous fixed-frequency PWM controller.
  • High-accuracy voltage and current regulation.
  • AEC-Q100 automotive qualified.
  • 20-VQFN package for surface mounting.

BQ24105IRHLRQ1 Applications

  • Ideal for automotive battery charging.
  • Suitable for single-cell battery packs.
  • Designed for two-cell battery packs.
  • Supports three-cell battery packs.
  • Used in Li-Ion and Li-Polymer applications.

BQ24105IRHLRQ1 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the package type of the BQ24105IRHLRQ1?

20-VQFN Exposed Pad

What is the operating temperature range?

-40°C to 85°C

What is the maximum charge current?

2A

What battery chemistries are supported?

Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiCd, NiMH

How many series cells can be charged?

1, 2, or 3 series cells

What is the input voltage range?

4.35V to 16V

What control topology does the charger use?

Switch-Mode Buck

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