LTC1644IGN#TRPBF

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PMIC or Power Management Integrated Circuits are electric semiconductors which are used to regulate the power supply from the power source to the various electric components in a circuit board. For example they are used to perform onboard management of power drawn from an AC adapter, monitor a system’s power usage, and to boost the voltage of a low-output Li Po battery. Hot Swap Controllers are PMICs which are used when hot swapping components in an electronic system. Hot swapping implies removing and replacing electronic components without involving a full disconnection of power, and it is implemented in order to reduce downtime due to maintenance activities or to change out components which fail often.

The LTC1644IGN#TRPBF is a Hot Swap Controller designed for low power applications. This PMIC ranges from 0.5uA at 2.5V to 4uA at 4.5V and is specifically intended for use in applications that require very low on-resistance and have extremely tight current and load regulation. The device is also configured to provide low electrical noise levels that are essential for noise-sensitive applications like USB peripherals and audio amplifiers.

The LTC1644IGN#TRPBF consists of a high precision current control section, an ADC and a control logic section. The high precision current control section incorporates an internal charge pump comprised of a programmable current source and a low on-resistance MOSFET. The ADC in the device is used to measure the power applied to the load, allowing for low level load current accuracy and high speed over current detection. The control logic section combines a POR, watch dog timer and system monitor functions which provide reliable and accurate monitoring of the hot-swap circuitry.

The LTC1644IGN#TRPBF Hot Swap Controller can be used in any application where hot swapping components is necessary in order to reduce maintenance cost or reduce frequent component failure. Common application fields for the device include automotive modules, such as body control modules, ESC systems, and the like, as well as server racks, power supplies, and power amplifiers.

In summary, the LTC1644IGN#TRPBF is a Low Power Hot Swap Controller which is suitable for a wide range of applications, from automotive modules to power supplies, amplifiers and server racks. Its features include high precision current control, low on-resistance MOSFET, ADC, POR and a watchdog timer, which all work together to provide reliable and accurate hot swapping of components.

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