BQ25798RQMR

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BQ25798RQMR

IC CONTROLLED, 1-4-CELL, 5-A BUC

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  • 包 VQFN-HR (RQM)-29
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規格

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
BatteryChemistry Lithium Ion/Polymer
NumberofCells 1 ~ 4
Current-Charging Constant
ProgrammableFeatures Current, Timer, Voltage
FaultProtection Over Current, Over Voltage
ChargeCurrent-Max 5A
BatteryPackVoltage 18.8V (Max)
Voltage-Supply(Max) 24V
Interface I²C
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 29-VFQFN

概述

Description

The BQ25798RQMR is a versatile battery management IC designed by Texas Instruments. It primarily functions as a buck-boost battery charge controller, capable of regulating power for a wide range of input sources. This IC supports various battery types, including lithium-ion, lithium-polymer, and lithium iron phosphate, making it suitable for numerous portable electronic applications.
One of the standout features of the BQ25798RQMR is its ability to seamlessly transition between buck and boost modes, optimizing efficiency and extending battery life. It offers a high level of configurability and can handle input voltages from 3.6V to 24V, while supporting battery charging voltages up to 19.2V.
The device includes advanced safety features such as over-voltage, over-current, and thermal protection, ensuring reliable operation. It also supports USB On-the-Go (OTG) functionality and features I2C communication for easy integration and control within a system.
Overall, the BQ25798RQMR is ideal for developers looking for a robust, efficient, and flexible power management solution for portable and battery-operated devices.

Features

The BQ25798RQMR is a highly integrated switch-mode buck-boost battery charge management device. It is designed to efficiently charge single-cell to four-cell series battery packs. Key features include:
1. Input Voltage Range: Wide input voltage range supports various power sources, including USB and adapter.
2. Buck-Boost Operation: Seamlessly transitions between buck and boost modes to optimize charging efficiency across different input/output conditions.
3. Flexible Charging: Programmable charge current, voltage, and termination settings allow for customizable charging profiles.
4. I2C Interface: Equipped with an I2C interface for communication and control, enabling integration with system management.
5. Power Path Management: Features dynamic power path management to prioritize load power and ensure optimal battery charging.
6. Safety Features: Includes protections such as over-voltage, over-current, short-circuit, and thermal regulation to enhance safety and reliability.
7. Low Power Modes: Supports low quiescent current modes for improved efficiency in standby conditions.
8. Integration: Combines power FETs, power path, and battery management functionalities in a compact package, reducing the need for additional components.
These features make the BQ25798RQMR suitable for a variety of portable electronic devices requiring efficient and flexible battery charging solutions.

Package

The BQ25798RQMR is a battery charge controller by Texas Instruments, offered in a VQFN (Very Thin Quad Flat No-Lead) package. Specifically, it uses a 4 mm x 4 mm, 24-pin VQFN package, which is compact and suitable for space-constrained applications.

Pinout

The BQ25798RQMR is a buck-boost battery charge management IC designed by Texas Instruments. It is part of the BQ2579x series, primarily used for managing battery charging in various portable devices. The BQ25798RQMR comes in a VQFN package with a total of 30 pins.
Key functions of the BQ25798RQMR include:
1. Buck-Boost Operation: It supports both buck (step-down) and boost (step-up) operations to maintain output voltage regulation regardless of the input voltage.
2. Battery Charge Management: It provides a comprehensive solution for battery charging, supporting a wide range of battery chemistries.
3. Input Source Detection: It can automatically detect and select the best available power source for charging.
4. I2C Interface: Includes an I2C interface for configuration and monitoring, allowing communication with a host controller.
5. Protection Features: Offers various protection mechanisms, such as over-voltage, under-voltage, over-current, and thermal protection, ensuring safe operation.
These features make the BQ25798RQMR suitable for applications in smartphones, tablets, and other portable electronic devices that require efficient power management.

Manufacturer

The BQ25798RQMR is manufactured by Texas Instruments (TI). Texas Instruments is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. TI is well-known for its innovative solutions and products in the field of embedded processing, analog technology, and digital signal processing. The company was founded in 1930 and has a strong reputation for developing components used in a wide range of applications, including industrial, automotive, personal electronics, and communications equipment.

Application

The BQ25798RQMR is a versatile battery management IC suitable for various applications. It is typically used in portable electronics, IoT devices, smartphones, tablets, and wearable technology. Its primary functions include battery charging, power path management, and boosting efficiency, making it ideal for devices requiring efficient power management and compact size. Its capabilities are also beneficial in applications involving USB Power Delivery and fast charging technologies.

Equivalent

The BQ25798RQMR is a highly integrated buck-boost battery charge controller. Equivalent products may include:
1. LTC4020 from Analog Devices: A multi-chemistry buck-boost battery charger.
2. MP2759 from Monolithic Power Systems: A buck-boost charger IC with similar features.
3. ISL9238 from Renesas: A buck-boost NVDC battery charger.
Ensure compatibility and similar feature sets before considering any substitute.

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