MP4658GS-P

MP4658 is a 4-string, secondary-side LED driver for LED backlighting and is ideal for monitor and small-sized TV LED backlighting. It controls the flyback power stage to regulate LED current loop and the output supply voltage. MP4658 integrates 4-string LED current balancing. Powered by a 6V to 36V input supply voltage (VIN), the MP4658 outputs a compensation signal to control the primary-side flyback (or other power stage) via an optocoupler to regulate the output voltage. The MP4658 supports analogue dimming and PWM dimming to the LED current through the ADIM and PDIM pins. For analogue dimming, apply a pulse signal with a frequency above 5KHz to the ADIM pin. For PWM dimming, apply a low-frequency PWM signal to the PDIM pin. The MP4658 also supports analogue mode PWM dimming to the LED current which makes the LED current rise and fall softly. MP4658 is available in SOIC-16 package. Applications include LCD monitor and TVs, desktop LCD flat panel displays, flat-panel video displays.

• 80V/200mA, 4-string LED current balance
• Provides feedback for the previous power stage
• <lt/>2% LED current accuracy, 1.5% LED current balance
• Low LEDx regulation voltage, high efficiency
• LED open protection, LED short protection
• LEDx pin short-to-GND protection, overvoltage protection (OVP)
• Feedback open protection and thermal protection

Remarques

MPS part numbers ending in "-P" and "-Z" are the same parts. P & Z only indicates reel size.