The MIC2287BD5 is a high-efficiency, White LED (WLED) driver developed by Microchip Technology, designed to provide optimal power solutions for portable devices that require backlighting. This advanced driver integrates a constant-current boost converter, which is essential for driving the series connection of WLEDs that function as the backlight in small LCD displays.

Key Features

• High Efficiency: With efficiency up to 90%, the MIC2287BD5 ensures extended battery life for portable devices by minimizing power loss during LED driving.
• Adjustable Output Voltage: The output voltage can be adjusted up to 34V, making it suitable for a wide range of LED configurations and ensuring consistent brightness.
• Small Form Factor: The compact 5-pin Thin SOT-23 package allows for minimal footprint and is ideal for space-constrained applications.
• Low Noise Operation: The device operates at a fixed frequency of 1.2MHz, allowing the use of small external components while reducing noise and potential interference with other circuits.
• PWM Dimming: The MIC2287BD5 supports Pulse-Width Modulation (PWM) dimming, offering precise control over the backlight brightness levels, which can enhance the user experience and conserve power.

Applications

The MIC2287BD5 is particularly well-suited for powering WLED backlights in various portable devices, including:

• Mobile phones
• Personal digital assistants (PDAs)
• Portable media players
• GPS units
• Digital cameras

Technical Specifications

• Input Voltage Range: 2.5V to 10V
• Output Voltage: Up to 34V (adjustable)
• Switching Frequency: 1.2MHz
• Package: Thin SOT-23-5

With its combination of high efficiency, adjustable output, and small package size, the MIC2287BD5 from Microchip Technology stands as a robust solution for driving WLED backlights in a variety of portable electronic devices.