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LT1947EMS#TRPBF from LT

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LT1947EMS#TRPBF

Manufacturer: LT, LINEAR

Adjustable Output TFT-LCD Triple Switching Regulator

Partnumber Manufacturer Quantity Availability
LT1947EMS#TRPBF,LT1947EMSTRPBF LT, LINEAR 2199 In Stock

Description and Introduction

Adjustable Output TFT-LCD Triple Switching Regulator The LT1947EMS#TRPBF is a high efficiency, monolithic step-down switching regulator manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 3.6V to 36V  
- **Output Voltage Range:** Adjustable from 1.22V to 20V  
- **Output Current:** Up to 1.1A  
- **Switching Frequency:** 1.2MHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 10-Lead MSOP  

### **Descriptions:**  
- The LT1947 is a constant-frequency, current-mode step-down DC/DC converter.  
- It features a low-dropout design, allowing it to maintain regulation with small input-output differentials.  
- Includes internal soft-start, thermal shutdown, and current limit protection.  

### **Features:**  
- **Wide Input Voltage Range:** Supports operation from 3.6V to 36V.  
- **High Efficiency:** Up to 95% efficiency with synchronous rectification.  
- **Low Dropout Operation:** Maintains regulation even when the input voltage is close to the output voltage.  
- **Adjustable Output Voltage:** Set via an external resistor divider.  
- **1.2MHz Switching Frequency:** Allows for small external components.  
- **Protection Features:** Overcurrent, thermal shutdown, and soft-start.  
- **Compact Package:** 10-Lead MSOP for space-constrained applications.  

This regulator is suitable for industrial, automotive, and battery-powered applications requiring high efficiency and a wide input voltage range.

Application Scenarios & Design Considerations

Adjustable Output TFT-LCD Triple Switching Regulator

Alternative Part Number

  • TPS61030PWPR --: Boost converter with integrated switch and similar input/output voltage range, widely available and pin-compatible in function for many LT1947 designs.
  • MAX1771ESA+ --: Step-up DC-DC controller with comparable switching frequency and current capability, suitable as a functional replacement with minor external component changes.
  • MC34063ADR2G --: Versatile general-purpose DC-DC converter IC that can be configured for boost operation, low cost and widely stocked as a fallback alternative.
  • TPS61020DRCR --: Boost converter with integrated switch in a small DFN package, functionally similar to the LT1947 for step-up applications and widely available.
  • MAX1763EUB --: Low-voltage step-up DC-DC converter in a small package, suitable as a functional substitute for similar boost regulator roles.

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