BQ24071

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

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Data sheet

document-pdfAcrobat bq2407x Single-Chip Li-Ion Charge and System Power-Path Management IC datasheet (Rev. G) PDF | HTML

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1-A Li-ion and LiFePO4 I²C programmable linear charger with regulated power path, WCSP package BQ25170 has lower quiescent current and configurable charge voltage.

BQ24071

ACTIVE

Data sheet

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Product details

Vin (min) (V)

4.35

Vin (max) (V)

16

Absolute max Vin (max) (V)

18

Charge current (max) (A)

1.5

Control topology

Linear

Number of series cells

1

Cell chemistry

Li-Ion/Li-Polymer

Rating

Catalog

Features

BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Power Path

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 85

Vin (min) (V)

4.35

Vin (max) (V)

16

Absolute max Vin (max) (V)

18

Charge current (max) (A)

1.5

Control topology

Linear

Number of series cells

1

Cell chemistry

Li-Ion/Li-Polymer

Rating

Catalog

Features

BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Power Path

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 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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