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Battery charger ICs

BQ24070

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1-cell 2-A Li-ion linear battery charger, Power Path, Output regulated to 4.4V

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Data sheet

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BQ25180 ACTIVE 1-A Li-ion and LiFePO4 I²C programmable linear charger with regulated power path, WCSP package This product is 1-A Li-ion and LiFePO4 I²C programmable linear charger with regulated power path in a WCSP package

BQ24070

ACTIVE
Data sheet Order now

Product details

Number of series cells 1 Charge current (max) (A) 1.5 Vin (max) (V) 16 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 18 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Power Path Vin (min) (V) 4.35 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 1.5 Vin (max) (V) 16 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 18 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Power Path Vin (min) (V) 4.35 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RHL) 20 15.75 mm² 4.5 x 3.5
  • Small 3.5-mm × 4.5-mm VQFN Package
  • Designed for Single-Cell Li-Ion- or Li-Polymer-
    Based Portable Applications
  • Integrated Dynamic Power-Path Management (DPPM)
    Feature Allowing the AC Adapter to Simultaneously
    Power the System and Charge the Battery
  • Power Supplement Mode Allows Battery to Supplement
    the AC Input Current
  • Autonomous Power Source Selection (AC Adapter
    or BAT)
  • Supports Up to 2 A Total Current
  • Thermal Regulation for Charge Control
  • Charge Status Outputs for LED or System Interface
    Indicates Charge and Fault Conditions
  • Reverse Current, Short-Circuit, and Thermal
    Protection
  • Power Good Status Outputs
  • 4.4-V and 6-V Options for System Output Regulation
    Voltage
  • Small 3.5-mm × 4.5-mm VQFN Package
  • Designed for Single-Cell Li-Ion- or Li-Polymer-
    Based Portable Applications
  • Integrated Dynamic Power-Path Management (DPPM)
    Feature Allowing the AC Adapter to Simultaneously
    Power the System and Charge the Battery
  • Power Supplement Mode Allows Battery to Supplement
    the AC Input Current
  • Autonomous Power Source Selection (AC Adapter
    or BAT)
  • Supports Up to 2 A Total Current
  • Thermal Regulation for Charge Control
  • Charge Status Outputs for LED or System Interface
    Indicates Charge and Fault Conditions
  • Reverse Current, Short-Circuit, and Thermal
    Protection
  • Power Good Status Outputs
  • 4.4-V and 6-V Options for System Output Regulation
    Voltage

The bq24070 and bq24071 are highly integrated Li-ion linear charger and system power-path management devices targeted at space-limited portable applications. The bq2407x devices offer DC supply (AC adapter) power-path management with autonomous power-source selection, power FETs and current sensors, high-accuracy current and voltage regulation, charge status, and charge termination, in a single monolithic device.

The bq2407x devices power the system while independently charging the battery. This feature reduces the charge and discharge cycles on the battery, allows for proper charge termination, and allows the system to run with an absent or defective battery pack. This feature also allows for the system to instantaneously turn on from an external power source in the case of a deeply discharged battery pack. The IC design is focused on supplying continuous power to the system when available from the AC adapter or battery sources.

The bq24070 and bq24071 are highly integrated Li-ion linear charger and system power-path management devices targeted at space-limited portable applications. The bq2407x devices offer DC supply (AC adapter) power-path management with autonomous power-source selection, power FETs and current sensors, high-accuracy current and voltage regulation, charge status, and charge termination, in a single monolithic device.

The bq2407x devices power the system while independently charging the battery. This feature reduces the charge and discharge cycles on the battery, allows for proper charge termination, and allows the system to run with an absent or defective battery pack. This feature also allows for the system to instantaneously turn on from an external power source in the case of a deeply discharged battery pack. The IC design is focused on supplying continuous power to the system when available from the AC adapter or battery sources.
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BQ24072 ACTIVE Standalone 1-cell 1.5-A linear battery charger, Power Path, 4.2-V VBAT and VOUT=VBAT + 225mV This product is a 1.5-A, standalone, single-cell Li-Ion battery charger with power path in a 3x3mm package.

Technical documentation

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Type Title Date
* Data sheet bq2407x Single-Chip Li-Ion Charge and System Power-Path Management IC datasheet (Rev. G) PDF | HTML 23 Dec 2014
Application note Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) 01 May 2018
Analog Design Journal 2Q 2016 Analog Applications Journal Issue 26 Apr 2016
Analog Design Journal Battery-charging considerations for low-power applications 26 Apr 2016
Application note Selecting the Best bq2407x/23x Single Cell Battery Charger for your Application 08 Nov 2012
Analog Design Journal Improving Battery Safety, Charging, and Fuel Gauging in Portable Media Apps 11 Mar 2009
Analog Design Journal Q1 2009 Issue Analog Applications Journal 11 Mar 2009
User guide Power-Path Li-Ion Charger Selection 17 Oct 2008
User guide bq24070 1.5-A Single-Chip Li-Ion & Li-Pol Charge Mgmt IC (Rev. A) 30 Aug 2006

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

BQ24070EVM — BQ24070 Evaluation Module

The Texas Instruments bq24070EVM is the evaluation module (EVM) for the bq24070 Single-Chip Charge and Dynamic Power-Path Management IC in 3.5x4.5 mm2 QFN package. The EVM is a complete bq24070 based circuit and provides a convenient method to evaluate the operation and performance of the IC.

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VQFN (RHL) 20 Ultra Librarian
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