(China (Mainland))
Product Summary
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 MP3389EF 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 MP3389EF regulates the current in each LED string to the programmed value set by an external current setting resistor. The applications are Desktop LCD Flat Panel Displays, Flat Panel Video Displays and LCD TVs and Monitors.
Parametrics
MP3389EF absolute maximum ratings: (1)VIN: -0.3V to +30V; (2)VVFAULT: VIN - 6V to VIN; (3)VGATE: -0.5V to 6.3V; (4)VLED1 to VLED12: -1V to +50V; (5)All Other Pins: -0.3V to +6.3V; (6)Continuous Power Dissipation (TA = +25℃): 3.9W; (7)Junction Temperature: 150℃; (8)Lead Temperature: 260℃; (9)Storage Temperature: -65 to +150℃.
Features
MP3389EF features: (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)2.5% Current Matching Accuracy Between Strings; (6)Programmable Switching Frequency; (7)PWM or DC Input Burst PWM Dimming; (8)Open and Short LED protection; (9)Programmable Over-voltage Protection; (10)Under Voltage Lockout; (11)Thermal Shutdown; (12)28-pin TSSOP and 28-pin SOIC Package.
Diagrams
| Image | Part No | Mfg | Description |  |
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 MP3389EF-LF |
Monolithic Power Systems (MPS) |
LED Lighting Drivers High V 12-String Boost WLED Ctlr |
Data Sheet |
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MP3389EF-LF-Z |
Monolithic Power Systems (MPS) |
LED Lighting Drivers High V 12-String Boost WLED Ctlr |
Data Sheet |
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