Allicdata Part #: | LTC4251-1CS6#TRMPBF-ND |
Manufacturer Part#: |
LTC4251-1CS6#TRMPBF |
Price: | $ 1.52 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Linear Technology/Analog Devices |
Short Description: | IC CTRLR HOTSWAP NEGVOLT SOT23-6 |
More Detail: | Hot Swap Controller 1 Channel -48V SOT-23-6 |
DataSheet: | LTC4251-1CS6#TRMPBF Datasheet/PDF |
Quantity: | 1000 |
Lead Free Status / RoHS Status: | Lead free / RoHS Compliant |
Moisture Sensitivity Level (MSL): | 1 (Unlimited) |
500 +: | $ 1.38159 |
Specifications
Series: | -- |
Packaging: | Tape & Reel (TR) |
Lead Free Status / RoHS Status: | -- |
Part Status: | Active |
Moisture Sensitivity Level (MSL): | -- |
Type: | Hot Swap Controller |
Number of Channels: | 1 |
Internal Switch(s): | No |
Applications: | -48V |
Features: | Latched Fault |
Programmable Features: | Circuit Breaker, Current Limit, Fault Timeout, OVP, UVLO |
Voltage - Supply: | -72 V ~ -36 V |
Current - Output (Max): | -- |
Operating Temperature: | 0°C ~ 70°C |
Current - Supply: | 800µA |
Mounting Type: | Surface Mount |
Package / Case: | SOT-23-6 Thin, TSOT-23-6 |
Supplier Device Package: | SOT-23-6 |
Feature Pins: | (UV, OV), TIMER |
Base Part Number: | LTC4251 |
Description
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LTC4251-1CS6#TRMPBF: PMIC – Hot Swap Controllers Applications and Working Principles
The LTC4251-1CS6#TRMPBF is an ultra-low-voltage hot swap controller designed for point-of-load power delivery and in-system power management applications. It bridges the gap between fast transient-response hot swap controllers and low-quiescent current, low-voltage hot swap controllers. The controller operates in both a hot swap (RIN) and a normal system load (ROUT) configuration.The LTC4251-1CS6#TRMPBF medical grade hot swap controller is ideal for medical device applications because of its low-voltage operation and patented fast overcurrent protection. This controller provides maximum coil current sense accuracy, which allows the device to respond to low-voltage fast transient load changes and also helps protect user safety by reducing chances of false trips.In applications such as monitoring and separating an over-voltage fault on a load board, the LTC4251-1CS6#TRMPBF provides an active loop to rapidly detect and trip the fault, minimizing system downtime. With its tight control loop bandwidth and patented control algorithms, this device provides optimal performance for high-transient voltage conditions.The LTC4251-1CS6#TRMPBF has features that make it one of the most reliable hot swap controllers on the market, including built-in thermal limiting and short circuit protection. The B-Grade thermal limitation prevents the device from reaching excessively high junction temperatures in the event of a short-circuit on the load board. This feature allows the device to quickly recover from high transient-voltage conditions, providing a safe and reliable solution for hot swap applications.In addition, the LTC4251-1CS6#TRMPBF hot swap controller includes a unique type of switching architecture that allows it to reduce power dissipation by up to 75%. This feature allows the device to operate at its highest performance efficiency, reducing power losses and saving valuable energy.The LTC4251-1CS6#TRMPBF is also easy to integrate into a wide variety of in-system hot swap applications with its available shutdown and monitoring/protection pin, making it ideal for applications where hot swapping is required. Its 2.5μA quiescent current makes it one of the lowest power hot swap controllers on the market, minimizing overall system power consumption.Working Principle of the LTC4251-1CS6#TRMPBF
The LTC4251-1CS6#TRMPBF utilizes an ultra-low voltage supply and a two-stage current limit protection scheme, allowing it to detect and respond quickly to fast transient and over-voltage faults.The device operates by sensing the voltage across an external sense resistor, Rz. This sense voltage is compared with an internal over-voltage (VOVP) and an over-current (VOCP) reference levels and a pre-set delay time (tdelay). When the VOCP voltage is exceeded, the pre-set time delay is triggered. If the voltage remains above VOCP after this set time, the device will activate its overcurrent protection circuit, which shuts down the output.Once the output is shut down, the device enters the normal system load configuration, and the main power switch (SW1) is disabled, isolating the system from the load. The device then waits for the fault to be cleared, at which point it will enable the main power switch and resume normal operation.Conclusion
The LTC4251-1CS6#TRMPBF is a low-voltage, ultra-low-power hot swap controller designed with patented algorithms to ensure a safe and reliable operation within in-system and medical applications. It includes features such as thermal limiting and overcurrent protection, making it a safe and efficient device for any hot swap application. With its unique switching architecture, it is capable of saving power in operating mode and provides maximum coil current sensing accuracy during fault conditions.The specific data is subject to PDF, and the above content is for reference
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