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BQ24081-Q1
  • BQ24081-Q1
  • BQ24081-Q1

BQ24081-Q1

ACTIVE

1-cell, 1-A, single Chip, Li-ion and Li-polymer Automotive charger

Texas Instruments BQ24081-Q1 Product Info

1 April 2026 0

Parameters

Rating

Automotive

Number of series cells

1

Cell chemistry

Li-Ion/Li-Polymer

Charge current (max) (A)

1

Features

BAT temp thermistor monitoring (hot/cold profile)

Vin (min) (V)

4.5

Vin (max) (V)

6.5

Absolute max Vin (max) (V)

7

Control topology

Linear

Battery charge voltage (min) (V)

4.2

Battery charge voltage (max) (V)

4.2

Control interface

Standalone (RC-Settable)

Operating temperature range (°C)

-40 to 125

Package

VSON (DRC)-10-9 mm² 3 x 3

Features

  • Integrated Power FET and Current Sensor for
    Up to 1-A Charge Applications From AC Adapter
  • Precharge Conditioning With Safety Timer
  • Charge and Power-Good Status Output
  • Automatic Sleep Mode for Low Power Consumption
  • Integrated Charge-Current Monitor
  • Fixed 7-Hour Fast Charge Safety Timer
  • Ideal for Low-Dropout Charger Designs for
    Single-Cell Li-Ion or Li-Pol Packs in
    Space-Limited Portable Applications
  • Small 3-mm × 3-mm SON Package
  • Integrated Power FET and Current Sensor for
    Up to 1-A Charge Applications From AC Adapter
  • Precharge Conditioning With Safety Timer
  • Charge and Power-Good Status Output
  • Automatic Sleep Mode for Low Power Consumption
  • Integrated Charge-Current Monitor
  • Fixed 7-Hour Fast Charge Safety Timer
  • Ideal for Low-Dropout Charger Designs for
    Single-Cell Li-Ion or Li-Pol Packs in
    Space-Limited Portable Applications
  • Small 3-mm × 3-mm SON Package

Description

The bq24080-Q1 and bq24081-Q1 are highly integrated and flexible Li-Ion linear charge devices targeted at space-limited charger applications. They offer an integrated power FET and current sensor, high-accuracy current and voltage regulation, charge status, and charge termination, in a single monolithic device. An external resistor sets the magnitude of the charge current.

The device charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on minimum current. An internal charge timer provides a backup safety for charge termination. The device automatically restarts the charge if the battery voltage falls below an internal threshold. The device automatically enters sleep mode when the ac adapter is removed.

The bq24080-Q1 and bq24081-Q1 are highly integrated and flexible Li-Ion linear charge devices targeted at space-limited charger applications. They offer an integrated power FET and current sensor, high-accuracy current and voltage regulation, charge status, and charge termination, in a single monolithic device. An external resistor sets the magnitude of the charge current.

The device charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on minimum current. An internal charge timer provides a backup safety for charge termination. The device automatically restarts the charge if the battery voltage falls below an internal threshold. The device automatically enters sleep mode when the ac adapter is removed.

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