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LM2751SD-B from NS,National Semiconductor

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LM2751SD-B

Manufacturer: NS, NSC

LM2751 Regulated 2X, 1.5X Switched Capacitor White LED Driver
Partnumber Manufacturer Quantity Availability
LM2751SD-B,LM2751SDB NS, NSC 237 In Stock

Description and Introduction

LM2751 Regulated 2X, 1.5X Switched Capacitor White LED Driver The LM2751SD-B is a switching regulator manufactured by National Semiconductor (NSC).  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage:** Adjustable (via external resistors)  
- **Output Current:** Up to 100mA  
- **Switching Frequency:** 1.6MHz (typical)  
- **Efficiency:** Up to 90%  
- **Package:** 10-pin LLP (Leadless Leadframe Package)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Features:**  
  - Fixed-frequency PWM operation  
  - Low shutdown current (<1µA)  
  - Internal soft-start  
  - Over-temperature protection  
  - Short-circuit protection  

### **Description:**  
The LM2751SD-B is a high-efficiency, step-up DC-DC converter designed for low-power applications. It provides a regulated output voltage from a low input supply, making it suitable for battery-powered devices.  

### **Features:**  
- Adjustable output voltage  
- High switching frequency for small external components  
- Low quiescent current  
- Built-in protection features (thermal shutdown, current limit)  
- Compact package for space-constrained designs  

This information is based on the manufacturer's datasheet. For detailed electrical characteristics and application circuits, refer to the official NSC documentation.

Application Scenarios & Design Considerations

LM2751 Regulated 2X, 1.5X Switched Capacitor White LED Driver

Alternative Part Number

  • TPS61040DBVR --: Boost converter in SOT-23-5 that can drive white LED backlight loads similar to the LM2751, widely available and pin-function compatible for many designs.
  • CAT4139TD-GT3 --: High-efficiency boost LED driver in SOT-23-5 with comparable current capability, suitable drop-in for small backlight boost applications.
  • AP3015AKTR-G1 --: Low-voltage boost converter in SOT-23-5 offering similar switching and output capability, a cost-effective alternative for LED bias supplies.
  • CAT3604V-GT3 --: Quad-channel charge pump LED driver in a small package, functionally similar to the LM2751 for backlight applications with comparable current regulation.
  • MAX1916EZT+T --: Low-dropout white LED bias/current regulator in SOT-23, suitable as a functional substitute for simple LED backlight driving where a charge pump is not strictly required.

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