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TS19451 Scheda tecnica(PDF) 1 Page - Taiwan Semiconductor Company, Ltd |
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TS19451 Scheda tecnica(HTML) 1 Page - Taiwan Semiconductor Company, Ltd |
1 / 7 page TS19451 AC/DC WLED Driver with Internal MOSFET Universal Switch Mode 1/7 Version: B11 SOT-89 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 TOPR -40 to +85 ºC Storage Temperature Range TSTG -65 to +150 oC Junction Temperature Range TJ -40 to +150 oC Thermal Resistance – Junction to Ambient RθJA 128 oC/W Note: Stresses beyond those listed under ”Absolute Maximum Ratings” may cause permanent damage to the device. These are stress rating only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Pin Definition: 1. Drain 2. GND 3. VDD |
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