Current Regulated Switched Capacitor LED Driver with Analog Brightness Control The LM2792LDX-H is a dual white LED charge pump regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Current:** Up to 30mA per LED (adjustable)  
- **Efficiency:** Up to 90%  
- **Switching Frequency:** 1MHz (typical)  
- **Number of LEDs Supported:** 2  
- **Package:** 10-pin LLP (Leadless Leadframe Package)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The LM2792LDX-H is designed to drive two white LEDs with regulated current, ensuring uniform brightness. It uses a charge pump architecture for efficient power conversion and includes an internal current regulator for each LED.  

### **Features:**  
- **Dual Independent LED Current Sinks**  
- **1x/1.5x Charge Pump Modes** for optimized efficiency  
- **PWM Dimming Control** (via external PWM signal)  
- **Low Dropout Operation**  
- **Thermal Shutdown Protection**  
- **Undervoltage Lockout (UVLO)**  
- **No External Inductors Required**  

This device is commonly used in backlighting applications for small LCD displays in portable electronics.

Current Regulated Switched Capacitor LED Driver with Analog Brightness Control