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.
