BQ24751BRHDR

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Texas Instruments

HOST CONTROLLED 2-4 CELL BUCK BATTERY CHARGE CONTROLLER IN 5X5 WQFN PACKAGE

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BQ24751BRHDR

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Texas Instruments

HOST CONTROLLED 2-4 CELL BUCK BATTERY CHARGE CONTROLLER IN 5X5 WQFN PACKAGE

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Description Specifications Series Pricing CAD Documents

Description

General part information

BQ24751 Series

The bq24751A is a high-efficiency, synchronous battery charger with integrated compensation and system power selector logic, offering low component count for space-constrained multi-chemistry battery charging applications. Ratiometric charge current and voltage programming allows very high regulation accuracies, and can be either hardwired with resistors or programmed by the system power-management microcontroller using a DAC or GPIOs.

The bq24751A charges two, three, or four series Li+ cells, supporting up to 10 A of charge current, and is available in a 28-pin, 5x5-mm thin QFN package.

The bq24751A controls external switches to prevent battery discharge back to the input, connect the adapter to the system, and to connect the battery to the system using 6-V gate drives for better system efficiency. For maximum system safety, inrush-power limiting provides instantaneous response to high input voltage multiplied by current. This AC Over-Power protection (ACOP) feature limits the input-switch power to the programmed level on the ACOP pin, and latches off if the high-power condition persists to prevent overheating.

Technical Specifications

Parameters and characteristics for this part

Specification	BQ24751BRHDR

Battery Chemistry	Multi-Chemistry
Battery Pack Voltage (Max)	18.048 V
Charge Current - Max	10 A
Current - Charging	Constant, Programmable
Fault Protection	Over Voltage, Over Current
Mounting Type	Surface Mount
Number of Cells (Max)	4
Number of Cells (Min)	2
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Package / Case	28-VFQFN Exposed Pad
Package Length	5 mm
Package Name	28-VQFN
Package Width	5 mm
Voltage - Supply (Max)	24 V

BQ24751 Series

Host controlled 2-4 cell Buck battery charge controller with system power selector with low Iq

Part	Fault Protection	Battery Chemistry	Mounting Type	Package Length	Package Name	Package Width	Package / Case	Number of Cells (Max)	Number of Cells (Min)	Voltage - Supply (Max)	Battery Pack Voltage (Max)	Operating Temperature (Max)	Operating Temperature (Min)	Charge Current - Max	Current - Charging	Supplied Contents	Function	Utilized IC / Part	Contents	Type
Texas Instruments BQ24751BRHDRG4	Over Current Over Voltage	Multi-Chemistry	Surface Mount	5 mm	28-VQFN	5 mm	28-VFQFN Exposed Pad	4	2	24 V	18.048 V	125 °C	-40 °C	10 A	Constant Programmable
Texas Instruments BQ24751BRHDR	Over Current Over Voltage	Multi-Chemistry	Surface Mount	5 mm	28-VQFN	5 mm	28-VFQFN Exposed Pad	4	2	24 V	18.048 V	125 °C	-40 °C	10 A	Constant Programmable
Texas Instruments BQ24751BEVM																Board(s)	Battery Charger	BQ24751B	Board	Power Management
Texas Instruments BQ24751RHDT	Over Current Over Voltage	Multi-Chemistry	Surface Mount	5 mm	28-VQFN	5 mm	28-VFQFN Exposed Pad	4	2	24 V	18.048 V	125 °C	-55 °C	10 A	Constant Programmable
Texas Instruments BQ24751RHDR	Over Current Over Voltage	Multi-Chemistry	Surface Mount	5 mm	28-VQFN	5 mm	28-VFQFN Exposed Pad	4	2	24 V	18.048 V	125 °C	-55 °C	10 A	Constant Programmable
Texas Instruments BQ24751AEVM																Board(s)	Battery Charger	BQ24751A	Board	Power Management
Texas Instruments BQ24751ARHDR	Over Current Over Voltage	Multi-Chemistry	Surface Mount	5 mm	28-VQFN	5 mm	28-VFQFN Exposed Pad	4	2	24 V	18.04 V	125 °C	-40 °C	10 A	Constant Programmable
Texas Instruments BQ24751ARHDT	Over Current Over Voltage	Multi-Chemistry	Surface Mount	5 mm	28-VQFN	5 mm	28-VFQFN Exposed Pad	4	2	24 V	18.04 V	125 °C	-40 °C	10 A	Constant Programmable
Texas Instruments BQ24751BRHDTG4	Over Current Over Voltage	Multi-Chemistry	Surface Mount	5 mm	28-VQFN	5 mm	28-VFQFN Exposed Pad	4	2	24 V	18.048 V	125 °C	-40 °C	10 A	Constant Programmable

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Host-controlled Multi-chemistry Battery Charger w/Sys Power Selector datasheet (Rev. A)

bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi Cell Synchronous (Rev. D)