The IC is a high precision primary-side feedback and regulation controller for LED lighting, it operates in constant current control mode and is designed to work in inductor current discontinuous conduction mode and extremely suitable for flyback convertor under universal input, the output power of system should be less than 12W.
The Device integrates 600V power MOSFET . Since adopting primary sense and feedback control technology , the secondary sense and feedback circuit is eliminated. The loop compensation components are also removed while maintaining stability overall operating conditions. The low component counts and low BOM cost are realized.
1. Built-in 600V Power MOSFET 2. Constant current control without secondary sense and feedback circuit. 3. Universal input voltage 4. LED short and open circuit protection 5. VCC under-voltage protection
The MP3389EF is a step-up controller with 12-channel current sources designed for driving the WLED arrays for large size LCD panel backlighting applications. The MP3389 uses current mode, fixed frequency architecture. The switching frequency is programmable by an external frequency setting resistor. It drives an external MOSFET to boost up the output voltage from a 5V to 28V input supply. The MP3389 regulates the current in each LED string to the programmed value set by an external current setting resistor.
1. High Efficiency and Small Size 2. 5V to 28V Input Voltage Range 3. Balanced Driver for 12 Strings of WLEDs 4. Maximum 60mA for Each String 5. Programmable Switching Frequency 6. PWM or DC Input Burst PWM Dimming 7. Open and Short LED protection
1. Desktop LCD Flat Panel Displays 2. Flat Panel Video Displays 3. LCD TVs and Monitors
Other data sheets within the file : MP3389, MP3389EY ( SOIC 28 )