MP3363GJ-Z

MP3363 is a fixed-frequency converter ideal for low-current and high-current boost applications. The low 0.2V feedback voltage (VFB) offers higher efficiency in white LED driver applications. The MP3363 regulates the output voltage (VOUT) up to 36V, with efficiency as high as 95%. Current mode regulation and external compensation components allow the MP3363 control loop to be optimized across a wide variety of input voltages. The MP3363 supports analogue dimming and pulse-width modulation (PWM) dimming on same pin. An input PWM signal with dimming frequency below 2KHz initiates PWM dimming, while an input PWM signal with dimming frequency above 5KHz initiates analogue dimming. Soft start, cycle-by-cycle current limit, and input under-voltage lockout (UVLO) protection prevent the sensitive external circuitry from being damaged or overstressed during start-up or potential overload current conditions. The MP3363 is available in a TSOT23-8 package.

• Single-string, 1.8V minimum VIN, 36V VOUT boost LED driver
• Wide 1.8V to 36V input voltage range
• 1A peak current limit, 0.5µA shutdown current
• Low 200mV feedback voltage (VFB)
• 200KHz to 2.2MHz configurable switching frequency (fSW)
• Internal 100mohm, 40V power switch
• Analog dimming and pulse width modulation (PWM) dimming
• Short FB to GND protection, soft start, thermal shutdown (TSD)
• Open/short LED protection
• Applications include two AA powered backlighting, LCD backlighting and general lighting