BD46255G-TR Integrated Circuits (ICs)

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In today\'s fast-paced digital world, the design of power management circuits is one of the most important elements for ensuring the reliability, performance, and cost-effectiveness of end products. In many applications, a power management integrated circuit (PMIC) is the most effective and economical solution to meet the demands of constantly advancing digital products.

The BD46255G-TR is a type of PMIC, specifically a supervisor IC. This device is ideal for monitoring system power supply and providing over voltage protection, making it useful for various applications including system power management, voltage detector, reset circuit, and recovering from under voltage shutdown. The BD46255G-TR is a design-in product that offers various system reset functions, such as manual reset as well as automated reset, making it suitable for many applications.

Application Field

The BD46255G-TR has a wide application range, since it can be used in various products such as servers, personal computers, office automated systems, communication equipment, audio/video products, and industrial devices. It is commonly used for the design and implementation of monitor circuits relevant to system power supply, such as reset generator, power supply on/off sequencer, power reset timer, power supply detection, protection, and level-shift circuit.

The device provides protection to include over voltage exposure to the power supply, as well as monitoring of the system by sequencing power supply to prevent a variety of voltage problems. It also helps in boosting system performance with its low power consumption design. In addition, it features thermal foldback protection and adjustable reset delay time, making it an ideal choice for a host of system monitoring designs.

Working Principle

The BD46255G-TR is an integrated system power supervisor device with two voltage detection circuits and two voltage de-latch circuits. It functions as an ultra-low current consumption reset IC that notifies the reset signal to a microcomputer or other external state machines when a system power supply is out of specification. The device also includes an input voltage limit circuit, which limits the voltage of the input power supply.

The device monitors the output of a DC-DC converter, switch power supply, or other types of power supplies and controls the reset function through its two internal voltage detection circuits. The circuit has the ability to detect the output voltage of all type of power supplies. The two independent detectors provide separate detection ranges, and the ratio between the two is adjustable with external resistors.

In addition, the device includes a manual reset circuit and a reset-delay function that can prevent false reset, allowing the system to start up normally. The manual reset input, MR pin, is an override circuit to force the reset output low. The delay time of the reset output can be adjusted using external capacitors, and the delay time from MR pin is fixed, allowing developers to ensure that a reset signal is sent to the microcomputer or state machine without fail.

Summary

The BD46255G-TR is a type of PMIC, specifically a supervisor IC, and is ideal for monitoring system power supply and providing over voltage protection. It is commonly used for the design and implementation of monitor circuits relevant to system power supply and is applicable to various products and system designs. The device features two voltage detection circuits and two voltage de-latch circuits which detect the output voltage of all type of power supplies, as well as manual reset circuit and a reset-delay function. With its unique solution as a reset generator, and its versatility with respect to power supply design and system requirements, the device features the versatility and reliability necessary to provide the best solutions for power management applications.

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