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LTC1421CSW-2.5 from LT

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LTC1421CSW-2.5

Manufacturer: LT, LINEAR

Hot swap controller

Partnumber Manufacturer Quantity Availability
LTC1421CSW-2.5,LTC1421CSW25 LT, LINEAR 498 In Stock

Description and Introduction

Hot swap controller The LTC1421CSW-2.5 is a product from **Linear Technology (now part of Analog Devices)**. Here are its key specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** 2.5V  
- **Input Voltage Range:** 4V to 36V  
- **Output Current:** Up to 1A (with external P-MOSFET)  
- **Dropout Voltage:** Low dropout (dependent on external FET)  
- **Regulator Type:** Linear Regulator Controller  
- **Package:** 16-Lead SOIC (SO-16)  
- **Operating Temperature Range:** 0°C to 70°C  
- **Control Method:** Uses an external P-channel MOSFET for pass element  
- **Protection Features:** Overcurrent and thermal shutdown  

### **Descriptions:**
- The LTC1421CSW-2.5 is a **linear regulator controller** designed to work with an external P-channel MOSFET to provide a low-dropout, high-efficiency voltage regulator.  
- It is optimized for applications requiring **precise voltage regulation** with minimal power loss.  
- The device is commonly used in **battery-powered systems, industrial controls, and telecom applications** where stable voltage regulation is critical.  

### **Features:**
- **Adjustable Output Voltage** (via external resistors, default fixed at 2.5V for this variant)  
- **Low Quiescent Current** (improves efficiency in battery-operated systems)  
- **Wide Input Voltage Range (4V to 36V)**  
- **External MOSFET Control** (allows flexibility in current handling)  
- **Overcurrent and Thermal Protection** (enhances system reliability)  
- **Small Footprint (SO-16 package)**  

This information is strictly based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Hot swap controller

Alternative Part Number

  • MAX5900AAEUT+T --: Hot-swap controller with similar function and pin-compatible footprint, suitable replacement for LTC1421 hot-swap applications.
  • TPS2420PW --: Hot-swap power controller offering comparable voltage monitoring and current limiting features for 2.5V rails.
  • ADM1075-1ARJZ --: Negative voltage hot-swap controller with similar functionality, usable as an alternative in hot-swap power management designs.
  • MAX793TCSE+ --: Pin-compatible microprocessor supervisor with similar reset and watchdog functions, widely available and often used as a drop-in replacement for LTC supervisor ICs.
  • ADM8691ARWZ --: Comparable supervisory circuit with reset, watchdog, and power-fail monitoring in a similar SOIC package, suitable for the same monitoring role.
  • TPS3705-25DR --: 2.5V voltage supervisor with reset output in SOIC, offering similar supply monitoring functionality at a lower cost.

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