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LM27953TLX from NS,National Semiconductor

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LM27953TLX

Manufacturer: NS

White LED Driver with Four LED Current Sinks and 3/2x Switched Capacitor Boost

Partnumber Manufacturer Quantity Availability
LM27953TLX NS 2215 In Stock

Description and Introduction

White LED Driver with Four LED Current Sinks and 3/2x Switched Capacitor Boost The LM27953TLX 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:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Current:** Adjustable up to 30mA per LED  
- **Number of Channels:** 3  
- **Efficiency:** Up to 90%  
- **Switching Frequency:** 1MHz (typical)  
- **Dimming Control:** PWM and Analog  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-Pin LLP (3mm x 3mm)  

### **Descriptions:**  
The LM27953TLX is a highly efficient, charge-pump-based LED driver designed for driving white LEDs in portable applications. It provides a regulated current to ensure uniform brightness across multiple LEDs. The device supports both PWM and analog dimming for brightness control.  

### **Features:**  
- Integrated 1x/1.5x charge pump for high efficiency  
- Low dropout operation for extended battery life  
- Automatic mode switching for optimized efficiency  
- Soft-start to limit inrush current  
- Thermal shutdown protection  
- Short-circuit and overvoltage protection  

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

Application Scenarios & Design Considerations

White LED Driver with Four LED Current Sinks and 3/2x Switched Capacitor Boost

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