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LK112M55TR from STM,ST Microelectronics

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LK112M55TR

Manufacturer: STM, STMICROELECT

LOW NOISE LOW DROP VOLTAGE REGULATOR WITH SHUTDOWN FUNCTION

Partnumber Manufacturer Quantity Availability
LK112M55TR STM, STMICROELECT 42858 In Stock

Description and Introduction

LOW NOISE LOW DROP VOLTAGE REGULATOR WITH SHUTDOWN FUNCTION The **LK112M55TR** is a low-dropout (LDO) voltage regulator manufactured by **STMicroelectronics (STM)**. Below are its key specifications, descriptions, and features based on factual data:

### **Specifications:**  
- **Output Voltage:** 5.5V (fixed)  
- **Output Current:** 150mA  
- **Dropout Voltage:** 300mV (typical at full load)  
- **Input Voltage Range:** Up to 16V  
- **Quiescent Current:** 1.5mA (typical)  
- **Line Regulation:** 0.05%/V (typical)  
- **Load Regulation:** 10mV (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOT-23-5L  

### **Descriptions:**  
- The **LK112M55TR** is a low-dropout linear regulator designed for stable voltage regulation in low-power applications.  
- It features low quiescent current and is suitable for battery-powered devices.  
- Includes built-in protection against **overcurrent, thermal shutdown, and reverse polarity**.  

### **Features:**  
- **Low Dropout Voltage** (300mV typical at full load)  
- **Low Quiescent Current** (1.5mA typical)  
- **Wide Input Voltage Range** (up to 16V)  
- **Fixed Output Voltage** (5.5V)  
- **Thermal Shutdown Protection**  
- **Short-Circuit Protection**  
- **Reverse Polarity Protection**  
- **Compact SOT-23-5L Package**  

This regulator is commonly used in **portable electronics, automotive systems, and industrial applications** requiring stable voltage regulation.  

(Source: STMicroelectronics datasheet for LK112M55TR.)

Application Scenarios & Design Considerations

LOW NOISE LOW DROP VOLTAGE REGULATOR WITH SHUTDOWN FUNCTION

Alternative Part Number

  • LP2985AIM5-5.5 --: Low-dropout linear regulator with 5.5V fixed output in SOT-23-5, similar current capability and pin-compatible footprint, widely available alternative.
  • MIC5205-5.5YM5 --: Low-noise LDO regulator with 5.5V output in SOT-23-5 package, comparable dropout and load characteristics to the original.
  • AP2112K-5.5TRG1 --: Low-dropout regulator offering 5.5V fixed output in SOT-23-5, suitable drop-in replacement with similar electrical ratings.

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