Manufacturer Part Number

BQ24271YFFT

Description

This is a battery charger IC for single-cell lithium-ion batteries. Made by Texas Instruments, it is in a compact 49-DSBGA (2.8x2.8mm) package. Supports programmable current charging, with advanced safety features for reliable battery management. It is ideal for portable consumer electronics needing high-efficiency and safe charging solutions.

Specifications

Input voltage up to 6V

Charge current maximum: 1.5A (programmable)

Battery pack voltage: 3.7V

Supports single lithium-ion cell

Interface: I2C communication

Over-temperature, over-voltage, and short circuit protection

Operating temperature: -40°C to +85°C

Surface-mount package: 49-UFBGA (also known as 49-DSBGA)

Moisture Sensitivity Level (MSL): 1 (Unlimited shelf life)

RoHS3 and REACH compliant

Product status: Active, available (703 pieces in stock)

Device Structure

Integrated Circuit (IC) built on semiconductor technology

49-ball DSBGA (wafer-level chip-scale) package with 2.8x2.8mm size

Surface-mount design for easy PCB assembly

I2C digital interface for external control and monitoring

Performance Characteristics

1.5A maximum programmable constant current charging

Adjustable charging parameters via I2C

Multiple fault protection: over-temperature, over-voltage, short circuit

Low-profile, ultra-small device for space-saving designs

Reliable operation within industrial range temperatures

Low power consumption for efficient system design

Application Environments

Portable consumer electronics: smartphones, tablets, digital cameras

Wearables and personal medical devices

Small form-factor devices needing lithium-ion charging

Handheld instrumentation

Any battery-powered device with single-cell Li-Ion battery

Selection Guidelines

Choose this IC for single-cell Li-Ion battery applications needing up to 1.5A charging

Ideal if space-saving and lightweight design is critical

Recommended for applications that require I2C interface and programmable charging

Check system voltage compatibility (up to 6V input)

Review cooling options if charging at maximum current

Ensure package type (DSBGA) meets manufacturing capabilities

Usage Considerations

Observe ESD and moisture sensitivity handling (MSL 1, but handle with care)

Ensure PCB supports fine-pitch, small-size ball grid array mounting

Include fault protection features in overall circuit design

Program charge current to suit battery and system requirements

Verify reliable I2C communication in your system

Design for safe operating temperature range (-40°C to 85°C)

Potential Equivalent/Replacement Models

No direct drop-in or fully equivalent alternatives are officially specified for BQ24271YFFT.

For similar lithium-ion single-cell battery charger solutions, review Texas Instruments products like BQ24250, BQ24295, BQ25895.

Other brands may offer alternatives but may differ in interface, package, or feature set.

If strict compatibility or pin-to-pin replacement is needed, please contact the Ariat-Tech sales team for recommendations and detailed equivalency verification.

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