BQ25505RGRR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Applications:	Energy Harvesting
Current - Supply:	325nA
Voltage - Supply:	0.12 V ~ 4 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	20-VFQFN Exposed Pad
Supplier Device Package:	20-VQFN (3.5x3.5)

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Introduction

The BQ25505RGRR is an advanced power management integrated circuit (PMIC) with a host of features to ensure efficient power management of applications ranging from receivers and processors to Li-ion, Li-polymer and lead-acid batteries. It is designed with a combination of high- efficiency power conversion, precision system-level control, and highly accurate power and energy measurements.

Application field

The BQ25505RGRR is a specialized kind of PMIC, designed to meet the requirements of applications where cost, board space and power efficiency are paramount. The chip incorporates a very efficient DC/DC converter capable of delivering up to 8 amperes of output current with an input voltage range of 5 V to 40 V. It is also designed with a combination of power conversion, precision system-level control, and highly accurate power and energy measurements.The chip is targeted at a variety of applications such as receivers and processors, notebook computers, Li-ion and Li-polymer battery applications, automotive applications, and portable consumer and healthcare electronics. In particular, the chip\'s multi-level current protection (MLCP) provides a very low battery test current as well as low quiescent current, thus making it suitable for battery powered systems. The chip also provides a configurable voltage regulation accuracy of ±1.2 %. The device\'s features also make it ideal for use in applications that require high efficiency and low standby power consumption, such as wireless telecommunications and low-power embedded systems. Additionally, the device has the capability to directly power an MCU from the battery, making it applicable in applications that require a microprocessor in constant operation, such as automotive and consumer applications.

Working Principle

The BQ25505RGRR utilizes a novel low quiescent current, high-efficiency, pulse-width modulated (PWM) switching converter architecture. This architecture enables the device to provide a highly efficient power conversion while providing a wide input voltage range.The chip includes an internal DC/DC switching regulator that utilizes an external inductor and an external feedback system with a current- sense resistor to accurately regulate the output voltage. The output voltage is set through the feedback pin voltage, where the voltage level at the feedback pin is compared with the internal reference voltage (VREF) to control the output voltage.The device also contains an I2C interface for external system control. The I2C allows for programming and monitoring of the output voltage and the status of the converter, allowing for a safe and efficient power system management system.The BQ25505RGRR also contains a programmable active over-voltage protection (AOP) circuit which allows the device to be safely operated. The AOP protects the device from input over-voltage conditions, preventing damage or malfunction due to high input voltages.

Conclusion

The BQ25505RGRR is a specialized PMIC, designed to provide a combination of high-efficiency power conversion and precision system-level control in applications, such as receivers and processors, notebooks, Li-ion and Li-polymer battery applications, automotive applications, and portable consumer and healthcare electronics. It is designed with an integrated pulse-width modulated (PWM) switching converter and I2C interface for external system control, allowing for a safe and efficient power management system. Additionally, the BQ25505RGRR provides a programmable active over-voltage protection (AOP) circuit, ensuring safe operation of the device in the event of high input voltages.

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