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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SC5010 датащи(PDF) 1 Page - Semtech Corporation |
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SC5010 датащи(HTML) 1 Page - Semtech Corporation |
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1 / 36 page  © 2011 Semtech Corporation POWER MANAGEMENT 1 SC5010 High Efficiency 8-Channel LED Driver with I2C Interface and Phase-Shifted PWM Dimming Features VIN Range — 4.5V to 27V, VOUT Range — Up to 50V Step-up (Boost) Controller Excellent Transient Response Programmable Switching Frequency Linear Current Sinks 8 Strings, up to 30mA/String Current Matching ±1% Current Accuracy ±1.5% PWM Dimming String-by-String Phase Shifting Input Dimming Frequency 100Hz-30kHz User Selectable 9 or 10 Bits Dimming Resolution Optional Synchronization to VSYNC/HSYNC Signal 5-bit Analog Dimming Optional External p-MOSFET Disconnect Switch True Load Disconnect and Inrush Current Limiting I2C Interface Fault Status — Open/Short LED, UVLO, OTP Device Control — SYNC Freq, PLL Setting Protection Features Open/Shorted LED(s) and adjustable OVP Over-Temperature and UVLO Shutdown Protection 4 X 4(mm) 28-pin QFN Package Applications Notebook PCs, UMPC, LCD Monitors, and Tablet PCs Description The SC5010 is an 8-channel high-precision, high-efficiency step-up (Boost) LED driver for backlight applications. It fea- tures wide input voltage range (4.5V to 27V) , flexible output configuration, wide analog and PWM dimming range, phase shifting and fading. It also features video signal syn- chronization (VSYNC), I2C interface, and numerous protec- tion features. An optional disconnect p-MOSFET provides true load disconnection and inrush current limiting. The boost controller, with programmable switching fre- quency from 200kHz to 2.2MHz, maximizes efficiency by dynamically minimizing the output voltage while maintain- ing LED string current accuracy. It provides excellent line and load response with no external compensation compo- nents. Each linear current sink is matched within ±1% for superb lighting uniformity, and the accuracy of each string current is ±1.5%. An external resistor adjusts the current from 10-30mA per string. It also features PWM dimming resolution of 9 or 10 bits (user selectable) over dimming frequency from 100Hz to 20kHz, synchronized to the SYNC signal or the boost oscillator. String-by-string phase shifting reduces the demand on the input/output capacitance, decreases EMI, and improves dimming linearity. SC5010 is available in a low-profile, thermally enhanced, 4 X 4 X 0.6(mm) QFN 28-pin package. UV LO AG N D ISET FSET CP LL SC P DRV P VIN S C 5010 R3 R6 FLT C3 BG FLT VC C PG N D R11 R7 C4 R10 R1 R2 C1 Q2 C2 OV P IO 8 IO 1 R9 R8 V IN=4.5 to 27V Up to 30m A /C H IO 2 IO 3 IO 4 IO 5 IO 6 C5 IO 7 R5 PW M I PW M I SYN C SYN C SD A SC L For I2C EN EN L1 Q1 R4 DRV N CS D1 V OUT up to 50V V CC = 4.5 to 5.5V (O ptional) 2.2μH 4.7μF Typical Application Circuit Revision 1.0 |
Аналогичный номер детали - SC5010 |
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Аналогичное описание - SC5010 |
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