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BQ24071

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1-cell 2-A Li-ion linear battery charger,Power Path, Output regulated to 6V

BQ24071 is in the process of being discontinued
Consider one of these alternates:
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Same functionality with different pin-out to the compared device
NEW BQ25185 ACTIVE 1-cell, 1-A stand-alone linear battery charger with power path and solar input support BQ25185 comes with wider Vin, higher battery discharge and solar input support.
Similar functionality to the compared device
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.
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

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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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
Application note Selecting the Best bq2407x/23x Single Cell Battery Charger for your Application 08 Nov 2012
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

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Evaluation board

BQ24071EVM — BQ24071 Evaluation Module

The bq24071EVM provides a convenient method for evaluating the performance of a charge managementand system power solution for portable applications using the bq24070/1 productfamily. A completly designed and tested module is presented. The charger is designed to deliver up to 1.5 A of (...)

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VQFN (RHL) 20 View options

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