TS19452CS RLG Taiwan Semiconductor

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 voltage source ranging up to 450VDC. It includes an internal high voltage switching MOSFET controlled with fixed off-time of approximately 12S. 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 Features Typical Application Circuit 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) Application Decorating LED lighting LED lamps with AC or DC operation. Ordering Information Part No. Package Packing TS19452CS RLG SOP-8 2.5Kpcs / 13 Reel Note: G denote for Halogen Free Product Absolute Maximum Rating Parameter Symbol Limit Unit Input Voltage Range V to GND ~ +475 V IN Supply Current I 400 uA DD Power Dissipation T =25C P 2500 mW A D Operating Ambient Temperature T -40 to +85 C OPR o Storage Temperature Range T -65 to +150 C STG o Junction Temperature Range T -40 to +150 C J o Thermal Resistance Junction to Ambient R 65 C/W JA 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 Not Recommended TS19452 AC/DC WLED Driver with Internal MOSFET Universal Switch Mode o Electrical Specifications (Ta = 25 C, V = 50V, unless otherwise noted) DRAIN Function Parameter Symbol Test Conditions Min Typ Max Units Internal Regulator Internally Regulated Voltage V -- 7.5 -- V DD Drain Supply Voltage V 20 -- 450 V DRAIN Undervoltage Lockout Threshold UVLO V rising 5 -- -- V DD Undervoltage Lockout Hysteresis UVLO V falling -- 200 -- mV DD Supply Current I V =8.5V, V =40V -- -- 400 A DD DD(EXT) DRAIN Output (Drain) Breakdown Voltage V Note 1 550 -- -- V BR On Resistance R I =100mA -- -- 100 DSON DRAIN Output Capacitance C V =400V -- 1.0 5.0 pF DRAIN DRAIN MOSFET Saturation current I -- -- 120 mA SAT Current Sense Comparator Threshold Current I Note 1 90 -- 110 mA TH Leading edge Blanking delay T Note 1,2 200 300 400 nS BLANK Minimum Turn On-Time T -- -- 650 nS ON(MIN) Off-Time Generator Turn On-Time T 8 12 18 S OFF Note 1: The specification which apply over the full operating ambient temperature range of -40C<T <+85C A 2: Guaranteed by design Block Diagram 2/7 Version: A12 Not Recommended