LTC4359IMS8#PBF

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LTC4359IMS8#PBF is a dual Ideal Diode Controller and ORing Power Management Integrated Circuit (PMIC) that provides an efficient alternative to traditional diodes in a single package. It works in conjunction with two low forward drop Schottky diodes and two reasonably sized MOSFETs to enable bidirectional current flows with improved efficiency and heat dissipation compared to standard diode ORing. It also allows for significant reduction of power dissipated in the MOSFETs where appropriate.

The LTC4359IMS8#PBF is used for applications where a simple OR circuit is required to protect load circuits from both undervoltages and overvoltages, while also minimizing power dissipation in each component part. The dual ideal diode controller works in conjunction with two low forward voltage diodes and two low resistance MOSFETs to form a safe and reliable OR operation. The LTC4359IMS8#PBF can be used to protect any sensitive load circuit, such as processor cores and system memory modules, from dangerous voltage fluctuations.

The working principle of LTC4359IMS8#PBF is based on the concept of an ideal diode circuit. This is a nonlinear circuit that acts as a bridge between two voltage sources and can be configured to allow a unidirectional or bidirectional current flow. It works by utilizing a differential amplifier connected to two MOSFETs. The amplified voltage difference between the two voltage sources is compared against a reference voltage to create an upper and lower threshold. When either of the voltage sources is higher than the other, one of the MOSFETs will turn on to allow current flow from the higher voltage source to the lower voltage source. When both of the voltage sources are at the same level, both transistors turn off and no current will flow.

The LTC4359IMS8#PBF is designed to detect and react to fast changing over-voltage and under-voltage conditions. When one of the voltages drops below a certain threshold, the LTC4359IMS8#PBF will shut off all MOSFETs and thus disconnect the load. This feature is particularly useful in applications that require high-speed, concurrent protection from both under- and overvoltage conditions. The LTC4359IMS8#PBF also offers configuration flexibility with various jumper settings to ensure the correct over- and undervoltage thresholds are set for the application.

The LTC4359IMS8#PBF has been widely used in areas such as computer peripherals and communications equipment, as well as aerospace, automotive and industrial control applications where high-speed, concurrent over- and undervoltage protection is required. The LTC4359IMS8#PBF can provide superior power and cost savings when compared to conventional diode ORing as it can reduce power dissipation in both MOSFETs as well as diodes by up to 39%, resulting in fewer components and improved reliability.

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