MP3389 – 12-String / Step-up White LED Driver

MP3389 Datasheet PDF learn more.

Part number : MP3389

Functions : This is a kind of semiconductor, 12-String / Step-up White LED Driver.

Pin arrangement :

Package information :

Manufacturer : MPS

Image :

MP3389 Datasheet PDF

The texts in the PDF file :

MP3389 12–String, Step-up White LED Driver The Future of Analog IC Technology DESCRIPTION The MP3389 is a step-up controller with 12channel 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. The MP3389 applies 12 internal current sources for current balance. And the current matching can achieve 2.5% regulation accuracy between strings. Its low 550mV regulation voltage on LED current sources reduces power loss and improves efficiency. PWM dimming is implemented with external PWM input signal or DC input signal. The dimming PWM signal can be generated internally, and the dimming frequency is programmed by an external setting capacitor. FEATURES • • • • • • • • • • • • • • • High Efficiency and Small Size 5V to 28V Input Voltage Range Balanced Driver for 12 Strings of WLEDs Maximum 60mA for Each String 2.5% Current Matching Accuracy Between Strings Programmable Switching Frequency PWM or DC Input Burst PWM Dimming Open and Short LED protection Programmable Over-voltage Protection Under Voltage Lockout Thermal Shutdown 28-pin TSSOP and 28-pin SOIC Package Desktop LCD Flat Panel Displays Flat Panel Video Displays LCD TVs and Monitors APPLICATIONS All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION M1 L1 D1 COUT VIN 5V~28V CIN R1 2 VIN VFAULT 27 CVCC C COMP RCOMP R2 3 VCC GATE 26 M2 4 COMP ISENSE 24 Enable R OSC [ … ]

MP3389 PDF File



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