BU4809F-TR

PMIC, or power management integrated circuits, perform multiple functions related to voltage regulation, power sequencing and supervisory operations. Supervisory circuits keep systems running smoothly by monitoring and controlling how components interact. The BU4809F-TR is well-suited to many applications, thanks to its wide operating voltage range, high precision voltage monitoring capabilities and its wide range of programmable LV/HV thresholds.

BU4809F-TR Specifications

The BU4809F-TR is a high performance power management IC featuring 2 high voltage monitoring outputs, one low voltage monitoring output and a watchdog timer. It has an operating voltage range of 1.8V to 5.5V and a temperature range of -40°C to +85°C. The allowable voltage range for its high voltage monitoring output is from 1.8V to 15V, and for its low voltage monitoring output is from 1.4V to 10V. In addition, it offers adjustable trip points on both the high and low voltage monitoring outputs, with trip point accuracy of ±2%. The watchdog timer provides a 1.3ms~252ms reset time out period.

BU4809F-TR Applications

The BU4809F-TR is well suited for a variety of applications. It is often used in consumer electronics, such as mobile phones, digital cameras, camcorders, and gaming devices. It is also suitable for personal computers, medical equipment, smart home electronics, automotive electronics, and industrial automation systems.

BU4809F-TR Working Principle

The BU4809F-TR monitors both voltage levels and temperature levels, and will issue an alarm if they exceed their respective thresholds. It has two high voltage and one low voltage monitoring outputs. These outputs can be individually programmed to provide either a push-pull or open drain output. The BU4809F-TR features a watchdog timer, which is used to reset the system if it is stuck in an infinite loop or is otherwise not functioning properly. The timer can provide up to 252ms of timeout time.

In addition to its monitoring and reset functions, the BU4809F-TR also features several protection functions, such as over-temperature protection, over-voltage protection, and under-voltage protection. It can also enter a low-power quiescent mode to reduce unnecessary power consumption.

Conclusion

The BU4809F-TR is a versatile, high performance supervisory IC. It provides two high voltage and one low voltage monitoring outputs, as well as adjustable trip points and a watchdog timer. With its wide operating voltage range and adjustable thresholds, it is well suited to a variety of applications such as consumer electronics, medical equipment, automotive electronics, and industrial automation systems.