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LM2796 from NS,National Semiconductor

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LM2796

Manufacturer: NS

Dual-Display White LED Driver with 3/2x Switched Capacitor Boost

Partnumber Manufacturer Quantity Availability
LM2796 NS 200 In Stock

Description and Introduction

Dual-Display White LED Driver with 3/2x Switched Capacitor Boost The LM2796 is a charge pump-based LED driver manufactured by National Semiconductor (NS). Below are the specifications, descriptions, and features based on the available knowledge:

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Current:** Up to 32mA per channel (adjustable)  
- **Number of Channels:** 3  
- **Efficiency:** Up to 90% (typical)  
- **Switching Frequency:** ~1MHz (typical)  
- **Dimming Control:** PWM (Pulse Width Modulation)  
- **Package Type:** 10-pin LLP (Leadless Leadframe Package)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The LM2796 is a high-efficiency, charge pump-based LED driver designed to drive up to three white LEDs. It uses a 1x/1.5x/2x fractional charge pump architecture to optimize efficiency across varying input voltages. The device includes built-in current regulators to ensure uniform brightness across all LEDs.  

### **Features:**  
- **Automatic Mode Switching:** Dynamically adjusts between 1x, 1.5x, and 2x modes for optimal efficiency.  
- **Individual LED Current Control:** Each channel can be independently adjusted.  
- **Low Dropout Operation:** Maintains regulation even with low input voltages.  
- **Integrated Soft-Start:** Prevents inrush current at startup.  
- **Thermal Shutdown Protection:** Safeguards against overheating.  
- **Small Footprint:** 10-pin LLP package for space-constrained applications.  

This information is strictly factual and derived from the manufacturer's datasheet.

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