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LM2791LD-L from NS,National Semiconductor

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LM2791LD-L

Manufacturer: NS

Current Regulated Switched Capacitor LED Driver with Analog Brightness Control

Partnumber Manufacturer Quantity Availability
LM2791LD-L,LM2791LDL NS 96 In Stock

Description and Introduction

Current Regulated Switched Capacitor LED Driver with Analog Brightness Control The LM2791LD-L is a white LED driver manufactured by National Semiconductor (NS). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** National Semiconductor (NS)  
- **Part Number:** LM2791LD-L  
- **Type:** White LED Driver  
- **Package:** LLP (Leadless Leadframe Package)  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Current:** Adjustable (typically up to 30mA per LED)  
- **Number of Outputs:** 2  
- **Switching Frequency:** 1MHz (typical)  
- **Efficiency:** Up to 85%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The LM2791LD-L is a charge-pump-based LED driver designed to power white LEDs efficiently. It provides a regulated current output for backlighting applications in portable devices such as mobile phones, PDAs, and digital cameras. The device operates from a single-cell Li-Ion battery and includes built-in protection features.  

### **Features:**  
- **Charge Pump Architecture:** 1x and 1.5x modes for improved efficiency.  
- **Adjustable LED Current:** Set via an external resistor.  
- **Low Dropout Operation:** Ensures stable performance even at low input voltages.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Thermal Shutdown Protection:** Prevents overheating.  
- **Small Footprint:** LLP package saves board space.  
- **No External Inductors Required:** Simplifies design.  

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

Application Scenarios & Design Considerations

Current Regulated Switched Capacitor LED Driver with Analog Brightness Control

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