The LM2757TMEV from Texas Instruments is a high-performance, regulated charge pump designed to provide a constant current source for driving high brightness LEDs. It is an ideal solution for portable devices that require efficient power management for their lighting components. The device is housed in a compact, easy-to-use package, making it perfect for space-constrained applications such as smartphones, tablets, and other portable electronics.

Key Features

• Adjustable Output Current: The LM2757TMEV allows for precise control of the LED current up to 30 mA, providing flexibility in the brightness of the LED.
• High Efficiency: With an efficiency rating of up to 90%, this charge pump conserves power, prolonging battery life in portable devices.
• Low Noise Operation: The device operates at a fixed switching frequency of 1MHz, which minimizes noise and potential interference with other device operations.
• Thermal Protection: Built-in thermal shutdown functionality protects the device from overheating, ensuring reliability and longevity.
• Small Footprint: The LM2757TMEV comes in a micro SMD package, which is ideal for space-sensitive applications.

Applications

• Mobile Phones
• Portable Media Players
• Handheld Gaming Devices
• Digital Cameras
• Other Portable Devices Requiring LED Backlighting

Technical Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 3.3V to 5.5V
• Switching Frequency: 1MHz
• Package Type: Micro SMD
• Operating Temperature Range: -40°C to 85°C

Overall, the LM2757TMEV from Texas Instruments stands out as a robust and versatile charge pump solution for LED backlighting in portable devices. Its high-efficiency operation, coupled with a comprehensive feature set, makes it a top choice for designers looking to optimize their power management systems.