LTC4223CDHD-2#TRPBF

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Hot Swap Controller
Number of Channels:	2
Internal Switch(s):	Both
Applications:	ATCA, MicroTCA™
Features:	Auto Retry, Thermal Limit, UVLO
Programmable Features:	Current Limit, Fault Timeout
Voltage - Supply:	2.7 V ~ 14 V
Current - Output (Max):	--
Operating Temperature:	0°C ~ 70°C
Current - Supply:	800µA
Mounting Type:	Surface Mount
Package / Case:	16-WFDFN Exposed Pad
Supplier Device Package:	16-DFN (5x4)
Feature Pins:	12IMON, 12ON, /12PGOOD, AUXON, /AUXPGOOD, /EN, /FAULT, TIMER
Base Part Number:	LTC4223

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Introduction

Power Management Integrated Circuits (PMICs) are electronic devices that control the power usage of systems or equipment. They are usually involved in the power distribution of the device and often require the implementation of multiple power supply functions such as voltage setting, current limiting, and thermal protection. Hot-swap controllers, as part of PMICs, provide a reliable method to serve applications that require plug-and-play style of operation. LTC4223CDHD-2#TRPBF, designed by Linear Technology, is a low-cost Hot-swap controller with a wide application scope and comprehensive features.

Feature Overview

The LTC4223CDHD-2#TRPBF hot-swap controller is a SOT23-6 with very low dropout voltage and high hot-swap current capability. It is capable of controlling the hot-swap process of power supply integrated into a system without any manual handling from user. This device is specially designed with overvoltage protection, inrush current limiting and full monitoring capabilities. It also brings a high degree of load level control, with adjustable soft-start time, current limit capabilities and overtemperature protection. A comprehensive set of safety and power management features are also built into this device to keep protected from various events.

Power System Applications

The LTC4223CDHD-2#TRPBF Hot-swap Controller has a wide range of applications in power systems. Its assistance of the hot-swap process and monitoring capabilities make it a great tool for system developers. It can be used in applications such as hard drive replacement, battery insertion/insertion, and power supply insertion. It can also be used to provide system protection against overloads, short circuits and temperature stress.

Hardware Setup

The setup and implementation of the LTC4223CDHD-2#TRPBF typically involves the following components:

• A supply voltage source
• Loads with adjustable current limits, soft-start and thermal protection
• Power management circuits for monitoring and control
• A Hot-swap controller

The supply voltage is typically a fixed voltage source, such as a battery, while the loads typically require adjustable current limits, where the total current is dependent on the device\'s specified current limits and the environment\'s thermal characteristics. The power management circuits then provide monitoring functions such as output voltage, input current, output current, and temperature. Finally, the hot-swap controller is responsible for controlling the power supply\'s output, ensuring safe and reliable operation.

Working Principle

The working principle of the LTC4223CDHD-2#TRPBF Hot-swap controller is to manage the load current, or the power drawn from the input source. It serves as an intermediary between the input source and the output load and is responsible for preventing the input from being overloaded or damaged by sudden draws of current from the load.The controller contains a current limit feature that ensures that the current drawn from the input source is limited to the set limit, thereby protecting it from overloading and damage. On the other hand, it also contains a thermal protection circuit that shuts off the supply if the temperature of the system rises above a set threshold.In addition, the LTC4223CDHD-2#TRPBF Hot-swap controller also contains an inrush current limiting feature. This feature allows the power supply to start up safely by limiting the sudden spike in current that happens when the device is powered up. This feature helps prevent damage to the power supply or load from the surge of current.

Conclusion

The LTC4223CDHD-2#TRPBF Hot-swap controller is a low-cost, highly effective solution for allowing safe and reliable hot-swap operations of equipment. It contains a range of safety and power management features and serves a variety of power systems applications. By providing the necessary monitoring, current limiting and thermal protection functions, it ensures safe and reliable operation of the power-supply system.

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