TS19452CS RLG

TS19452 AC/DC WLED Driver with Internal MOSFET Universal Switch Mode SOP-8 Pin assignment: 1. Drain 8. Ground 2. Drain 7. Ground 3. Drain 6. Ground 4. Vdd 5. Ground General Description The TS19452 is a PWM high efficiency LED driver control IC. It allows efficient operation of LED strings from fixed off-time of approximately 12µS. en de d voltage source ranging up to 450VDC. It includes an internal high voltage switching MOSFET controlled with The LED string is driven at constant current, thus providing constant light output and enhanced reliability. The output current is internally fixed at 100mA. 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 Typical Application Circuit Features Constant output current at 100mA(typ) ● Universal 85~264VAC operation ● Fixed off-time buck converter ● Internal 475V power MOSFET ● Low inductance value at 4.7mH (typ) mm ● Application Decorating LED lighting ● LED lamps with AC or DC operation. eco ● Ordering Information Package Packing TS19452CS RLG SOP-8 2.5Kpcs / 13” Reel tR Part No. Note: “G” denote for Halogen Free Product Absolute Maximum Rating Symbol Limit Unit VIN to GND ~ +475 V Supply Current IDD 400 uA Power Dissipation @ TA=25ºC PD 2500 mW Operating Ambient Temperature TOPR -40 to +85 No Parameter Input Voltage Range ºC Storage Temperature Range TSTG -65 to +150 o Junction Temperature Range TJ -40 to +150 o C C o Thermal Resistance – Junction to Ambient RθJA 65 C/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. 1/7 Version: A12 TS19452 AC/DC WLED Driver with Internal MOSFET Universal Switch Mode Electrical Specifications (Ta = 25oC, VDRAIN= 50V, unless otherwise noted) Function Parameter Symbol Test Conditions Min Typ Max Units VDD -- 7.5 -- V Drain Supply Voltage VDRAIN 20 -- 450 V Undervoltage Lockout Threshold UVLO VDD rising 5 -- -- V Undervoltage Lockout Hysteresis ∆UVLO VDD falling -- 200 -- mV IDD VDD(EXT)=8.5V, VDRAIN=40V -- -- 400 µA VBR Note 1 Internally Regulated Voltage Supply Current d Internal Regulator Breakdown Voltage RDSON IDRAIN=100mA Output Capacitance CDRAIN VDRAIN=400V MOSFET Saturation current ISAT Current Sense Comparator ITH Note 1 mm Threshold Current -- -- V -- -- 100 Ω -- 1.0 5.0 pF -- -- 120 mA 90 -- 110 mA 200 300 400 nS en On Resistance 550 de Output (Drain) Leading edge Blanking delay TBLANK Minimum Turn On-Time TON(MIN) -- -- 650 nS TOFF 8 12 18 µS Off-Time Generator Turn On-Time Note 1,2 No tR Block Diagram e co Note 1: The specification which apply over the full operating ambient temperature range of -40ºC