ML0308

Preliminary ML0308 ML0308 Backlight LED Boost Converter The ML0308 is a step-up DC-DC converter specifically designed to drive up to four white LEDs in series from a single lithium-ion cell. The device provides regulated and inherently matched current to the LEDs with additional functions: automatic soft-start, output overvoltage protection, ON/OFF and dimming control. The ML0308 switches at 1.0 MHz, featuring the use of tiny external components. PACKAGE INFORMATION Features z Inherently-matched LED current z Drives up to four white LEDs from 3.6V supply z Automatic soft-start z Output overvoltage protection z High efficiency Applications z z LED backlighting with dimming control High efficiency step-up converter MARKING DIAGRAM www.DataSheet.net/ Figure 1: Typical application circuit Datasheet pdf - http://www.DataSheet4U.co.kr/ Preliminary ML0308 ABSOLUTE MAXIMUM RATINGS Rating Input voltage Output voltage Operating temperature Storage temperature ELECTICAL CHARACTISTICS PARAMETER Minimum Operating Voltage Maximum Operating Voltage Feedback Voltage Supply Current Switching EN Pin = 0V EN Pin HIGH Threshold EN Pin LOW Threshold Switch Frequency Duty Ratio MOSFET Current Limit MOSFET ON Resistance MOSFET Leakage Current Overvoltage Limit Soft-start Time VIN =3.0V, IDS = 100mA VIN =5.5V 16.7 200 1.0 17.5 0.5 0.7 73 180 1.0 75 250 1.53 77 0°C to 85°C 185 200 Pin VIN SW EN FB Value 6.0 18 10 VIN+0.3 -30 to 80 -40 to 125 Unit V V V V °C °C All specifications apply un...