TS19451

SOT-89 Pin Definition: 1. Drain 2. GND 3. VDD TS19451 AC/DC WLED Driver with Internal MOSFET Universal Switch Mode General Description The TS19451 is a PWM high efficiency LED driver control IC. It allows efficient operation of LED strings from voltage source ranging up to 400VDC. It includes an internal high voltage switching MOSFET controlled with fixed off-time of approximately 10.5µS. The LED string is driven at constant current, thus providing constant light output and enhanced reliability. The output current is internally fixed at 50mA. The peak current control scheme provides good regulation of the output current throughout the universal AC line voltage range of 85~264VAC or DC input voltage of 20~400V Features ● Constant output current at 50mA ● Universal 85~264VAC operation ● Fixed off-time buck converter ● Internal 475V power MOSFET Typical Application Circuit Application ● Decorating LED lighting ● Lower power lighting fixtures ● Back light of flat panel displays Ordering Information Part No. Package Packing TS19451CY RMG SOT-89 1Kpcs / 7” Reel Note: “G” denotes for Halogen Free Absolute Maximum Rating Parameter Symbol Limit Unit Input Voltage Range VIN to GND ~ +475 V Supply Current IDD 5 mA Power Dissipation @ TA=25ºC PD 1300 mW Operating Ambient Temperature Storage Temperature Range Junction Temperature Range Thermal Resistance – Junction to Ambient TOPR TSTG TJ RθJA -40 to +85 -65 to +150 -40 to +150 128 ºC oC oC oC/W Note: Stre...