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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SC5014AEVB датащи(PDF) 1 Page - Semtech Corporation |
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SC5014AEVB датащи(HTML) 1 Page - Semtech Corporation |
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1 / 27 page  POWER MANAGEMENT SC5014A High Efficiency 2-Channel HB LED Driver with I2C Interface and Direct PWM Dimming Revision 2.0 Features Input Voltage — 4.5V to 27V Output Voltage — Up to 50V Step-up (Boost) Controller Ultra-Fast Transient Response (<00μs) Programmable Switching Frequency Linear Current Sinks 2 Strings, up to 240mA/String Current Matching ±% Current Accuracy ±2% PWM Dimming Direct PWM Dimming, 000: at KHz Input Dimming Frequency 00Hz-30kHz 5-Bits Analog Dimming I2C Interface Fault Status — Open/Short LED, UVLO, OTP Protection Features Open/Shorted LED(s) and adjustable OVP Over-Temperature and UVLO Shutdown Protection 4mm X 4mm 20-pin QFN Package Applications UltrabooksTM, All-in-One PCs, Monitors, Automotive- Display Backlighting Backlighting for Mid-Size Displays Description The SC504A is a 2-channel, highly integrated, high-effi- ciency step-up (boost) HB LED driver designed to reduce the thickness of mid-size LCD displays. It features a wide input voltage range (4.5V to 27V), direct PWM dimming, analog dimming, a flexible output configuration, an I2C interface, and numerous protection features. The SC504A exhibits 2% to 4% higher efficiency when using the same size inductors as existing LED drivers. But, unlike existing devices, it can also operate with inductors that are up to 0x smaller without sacrificing efficiency. This part can also use very low-profile inductors (as small as 2.2µH, mm height), which allows LED drivers to be built directly into the LCD panel to enable ultra-thin displays. The boost controller, with programmable switching frequency from 200kHz to 2.2MHz, maximizes efficiency by dynamically minimizing the output voltage while maintaining LED string current accuracy. It provides excellent line and load response with no external com- pensation components. An external resistor adjusts the current from 40-240mA per string. U VLO E -PAD ISET FSET SC P SC5014A R 3 R 6 FLT C 3 R EF FLT VC C PG N D R 11 R 10 R 1 R 2 O VP IO 2 R 9 R 8 V IN=4.5 to 27V U p to 240m A/String IO 1 IO 1 IO 2 C 5 R 5 PW M I PW M I SD A SC L For I2C EN EN L1 Q 1 R 4 N D R V C S D 1 VOUT up to 50V VCC = 4.5 to 5.5V Typical Application Circuit |
Аналогичный номер детали - SC5014AEVB |
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Аналогичное описание - SC5014AEVB |
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