LTC4223CDHD-1#TRPBF

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PMIC - Hot Swap Controllers: LTC4223CDHD-1#TRPBF Application Field and Working Principle

The LTC4223CDHD-1#TRPBF is an advanced hot-swap controller from Linear Technology Corporation. It is designed for applications that require high power management and control precision in demanding conditions. The LTC4223CDHD-1#TRPBF is typically used in servers, storage, and communication modules that require a high degree of device heat dissipation, fault protection, and reliability.

The LTC4223CDHD-1#TRPBF offers a full featured hot swap controller solution, including inrush current limit, over-voltage protection, and commercial or military grade temperature range performance. The LTC4223CDHD-1#TRPBF addresses the circuit complexities associated with high power hot-swap applications. It is a programmable power manager equipped with a large set of digital resources to control, monitor, and protect devices during hot-swap operation.

Key Features of the LTC4223CDHD-1#TRPBF

The LTC4223CDHD-1#TRPBF has a number of key features that make it an attractive option for hot-swap applications. These features include:

• Complete Hot Swap® circuitry and control
• Integrated high-side power transistors for current-limited startup control
• Low-side power domain monitoring
• Integrated or external voltage level sensing
• Programmable current limit and UVLO thresholds
• Inrush current limit with externally adjustable ramp time
• Extended temperature range: -40°C to +105°C
• Accurate current sense amplifier capable of measuring up to 6A
• Integrated low power supervisor

Working Principle of the LTC4223CDHD-1#TRPBF

The LTC4223CDHD-1#TRPBF is a high current hot-swap controller that manages inrush currents and protects the system from excess currents and voltages. The hot-swap circuit works by automatically limiting the initial inrush current to a safe level, preventing voltage transients from exceeding the load\'s supply voltage and current rating. This ensures that the load is powered-up safely and prevents damage to the load and other components in the system.

The LTC4223CDHD-1#TRPBF integrates a high-side power resistor and logic circuitry to control the start-up current level. This startup current is adjustable via an externally set time period, allowing for customized timing and inrush parameters for different loads. The internal current sense amplifier measures the load current and the shunt-mode power transistor monitors the power domain voltage.

The LTC4223CDHD-1#TRPBF also has adjustable current limit and UVLO thresholds. The user can program the current limit, so that any load current beyond this limit will shut down the power. Likewise, the user can also program the UVLO threshold, so that any voltage below this threshold will automatically turn off the power rail. This ensures that the system remains in safe, stable condition while hot swapping devices.

The LTC4223CDHD-1#TRPBF is an ideal choice for hot-swap applications that require precise power management and reliable protection. With its high level of integration and flexible control, the LTC4223CDHD-1#TRPBF enables designers to easily and efficiently control and monitor power in applications under extreme operating conditions.

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