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LM27952SD from NS,National Semiconductor

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LM27952SD

Manufacturer: NS

White LED Adaptive 1.5X/1X Switched Capacitor Current Driver

Partnumber Manufacturer Quantity Availability
LM27952SD NS 13787 In Stock

Description and Introduction

White LED Adaptive 1.5X/1X Switched Capacitor Current Driver The LM27952SD is a dual 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)  
- **Type:** Dual White LED Driver  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Current:** Adjustable up to 30mA per LED  
- **Number of Channels:** 2  
- **Efficiency:** Up to 90%  
- **Switching Frequency:** 1MHz (typical)  
- **Package:** 10-Pin LLP (Leadless Leadframe Package)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The LM27952SD is a highly efficient, dual white LED driver designed for backlighting applications in portable devices. It features a current-regulated charge pump architecture, ensuring consistent brightness across multiple LEDs. The device operates from a single-cell Li-Ion battery and provides a compact, low-power solution for driving white LEDs in displays and keypads.  

### **Features:**  
- Dual regulated current outputs for uniform LED brightness.  
- Automatic soft-start to limit inrush current.  
- Low dropout operation for extended battery life.  
- Built-in thermal shutdown protection.  
- PWM dimming capability for brightness control.  
- Small footprint (10-pin LLP package) for space-constrained designs.  

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

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