Linear Technology LTC3203EDD#PBF - LED Driver IC

The LTC3203EDD#PBF from Linear Technology is a high-efficiency, charge pump-based, constant-current LED driver designed to provide a simple and compact solution for driving series-connected LEDs. Ideal for powering large LED arrays in portable devices, this driver is capable of driving up to six white LEDs from a 2.9V to 4.5V input, making it perfect for single-cell Li-Ion battery applications.

Key Features

• Input Voltage Range: 2.9V to 4.5V, suitable for single-cell Li-Ion batteries.
• Output Current: Up to 30mA per LED, with accurate current matching to ensure uniform brightness.
• High Efficiency: Integrated low-loss 1x/1.5x charge pump enables efficiencies up to 90%.
• Low Noise Operation: 1MHz fixed-frequency operation and soft-start feature minimize noise and input ripple.
• Thermal Protection: Built-in thermal shutdown function protects the IC from overheating.
• Compact Package: Available in a 10-lead (3mm × 3mm) DFN package, ideal for space-constrained applications.

Applications

The LTC3203EDD#PBF is versatile and can be used in a variety of applications where efficient LED driving is required. These include:

• Portable and handheld devices
• Backlighting for LCD displays
• Photo flash for digital cameras and smartphones
• General LED lighting

Product Summary

The LTC3203EDD#PBF LED driver by Linear Technology is a robust solution for driving multiple LEDs with constant current for uniform intensity. Its high efficiency, low noise operation, and compact size make it an excellent choice for designers looking to optimize their LED applications in portable devices. The inclusion of safety features such as thermal shutdown ensures reliable operation under various conditions. Whether for backlighting, photo flash, or general lighting, the LTC3203EDD#PBF provides a dependable and efficient driving mechanism for your LED requirements.