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LC5523F Datenblatt(PDF) 1 Page - Sanken electric |
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LC5523F Datenblatt(HTML) 1 Page - Sanken electric |
1 / 11 page SANKEN ELECTRIC CO., LTD. http://www.sanken-ele.co.jp/en/ LC5523F Description The LC5500 series is the power IC for the LED driver which has an incorporated power MOSFET, designed for input capacitorless applications, and making it possible for systems to comply with the harmonics standard (IEC61000- 3-2 class C). The controller adapts the average current control method for realizing high power factors, and the quasi-resonant topology contributes to high efficiency and low EMI noise. The rich set of protection features helps to realize low com- ponent counts, and high performance-to-cost power supply. The LC5523F is intended for isolated designs. The incor- porated MOSFET has a VDSS(min) rating of 650 V and RDS(on)(max) of 1.9 Ω. It is capable of a maximum output power of 60 W on 230 VAC supply and 40 W on universal input supply (85 to 265VAC) based on the thermal rating. Note that the maximum output power can be up to 120% to 140% of this value. However, it may be limited in applica- tions with low output voltage or short duty cycle. Single-Stage Power Factor Corrected Off-Line Switching Regulator IC Typical Application Package: 7-pin TO-220F Not to scale LF 3052 LF 3054 LF 3051 Features and Benefits • Integrated on-time control circuit (it realizes high power factor by average current control) • Integrated startup circuit (no external startup circuit necessary) • Integrated soft-start circuit (reduces power stress during start-up on the incorporated power MOSFET and output rectifier) • Integrated bias assist circuit (improves startup performance, suppresses VCC voltage droop during operation, and allows use of low-rated ceramic capacitor on VCC pin) • Integrated Leading Edge Blanking (LEB) circuit • Integrated maximum on-time limit circuit • Protection features: ▫ Overcurrent protection (OCP): pulse-by-pulse ▫ Overvoltage protection (OVP): pins VCC, OVP, and OCP, auto restart ▫ Overload protection (OLP): auto restart ▫ Thermal shutdown (TSD): latched shutdown T1 C2 D1 D3 D2 D4 F1 L1 C1 D5 L2 D6 D9 D8 + - PC1 U2 DZ1 Q1 DZ2 LED PC2 C4 PC2 D7 R1 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 7 OVP R4 R5 R6 VA C PC1 R7 C7 C8 C10 C11 C12 C13 C14 C15 C16 C9 C17 Vcc 6 OCP FB C6 5 4 VCC 3 NC S/GND 2 R20 1 D/ST U1 C5 C3 R OCP R3 LC5523F Control Part DZ3 R21 C18 November 26, 2012 Applications • LED lighting fixtures • LED light bulbs LC5523F-DS |
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