SC5012 SC5012Q High Efficiency 4-Ch, 150mA/Ch LED Driver with 2 I C Interface and Phase-Shifted PWM Dimming POWER MANAGEMENT Features Description Input Voltage 4.75V to 45V The SC5012/Q is a 4-channel high-precision, high-effi- Output Voltage Up to 65V ciency step-up (Boost) HB LED driver designed for back- Step-up (Boost) Controller light applications. It features wide input voltage range Ultra-Fast Transient Response (4.75V to 45V) , flexible output configuration, wide analog Programmable Switching Frequency and PWM dimming range, phase shifting, optional fading, External Sync Frequency for Boost Controller external boost controller frequency synchronization Linear Current Sinks 2 (FSYNC), I C interface, and numerous protection features. 4 Strings, up to 150mA/String Current Matching 1% The boost controller, with programmable switching fre- Current Accuracy 2% quency from 200kHz to 2.2MHz, can maximize efficiency PWM Dimming by dynamically minimizing the output voltage while String-by-String Phase Shifting maintaining LED string current accuracy. It provides excel- Dimming Frequency 100Hz-30kHz lent line and load response with no external compensa- User Selectable 9 or 10 Bits Dimming Resolution tion components. Each linear current sink is matched Optional Synchronization to VSYNC/HSYNC Signal within 1% for superb lighting uniformity, and the accu- External Frequency Synchronization, FSYNC racy of each string current is 2%. An external resistor 8-bit Analog Dimming adjusts the current from 40-150mA per string. It also fea- 2 I C Interface tures PWM dimming resolution of 9 or 10 bits (user select- Fault Status Open/Short LED, OTP able) over a dimming frequency from 100Hz to 20kHz, Device Control: SYNC Freq, PLL Setting synchronized to the SYNC signal or the boost oscillator. Protection Features String-by-string phase shifting reduces the demand on Open/Shorted LED(s) and adjustable OVP the input/output capacitance, decreases EMI, and Over-Temperature improves dimming linearity. 4mm X 4mm 24 Ld QFN Package AEC-Q100 Qualified Version Available SC5012/Q is available in 4mm X 4mm 24 Ld QFN package. Applications The SC5012Q is an AEC-Q100 qualified version. Medium-sized LCD Panel Automotive Car Navigation/Information Display LCD Monitors Automotive AEC-Q100 Qualified Application Typical Application Circuit VIN 4.75 to 45V L1 V up OUT C1 R4 to 65V SCP R5 EN C21 VIN VLDO C20 R24 DRVN Q1 VCC FLT R9 CS FLT R6 VLDO R15 FSET R8 SC5012 ISET C22 C4 SC5012Q R7 SS CPLL R11 OVP FSYNC FSYNC R10 2 I C SDA IO1 2 I C SCL Up to 150mA/CH IO2 SYNC SYNC PWMI PWMI IO3 C6 AGND PGND IO4 Revision 2.5 2013 Semtech Corporation 1V C C 19 12 O V P V LD O 20 11 IO 4 V IN 21 10 IO 3 FS E T 22 9 IO 2 A G N D 23 8 IO 1 FS Y N C P W M I 24 7 SC5012 SC5012Q Pin Configuration Ordering Information Device Package (1)(2) SC5012MLTRT MLPQ-24 44 (1)(2)(3) SC5012QMLTRT MLPQ-24 44 SC5012EVB Evaluation Board 18 1 C P LL D R V N SC5012QEVB Evaluation Board 2 17 P G N D S Y N C Notes: (1) Available in tape and reel only. A reel contains 3,000 devices. 3 16 S C L C S A G N D (2) Lead-free packaging only. Device is WEEE and RoHS compliant, S D A 4 15 S S and halogen free. (3) Device is AEC-Q100 qualified. 14 S C P IS E T 5 13 E N FLT 6 Marking Information 5012 5012Q yyww yyww xxxxx xxxxx xxxxx xxxxx yyww Dc yywywyww DDc c xxxxx S ch L . xxxxx xxxxx S Sch L ch L .. xxxxx S ch L . xxxxx xxxxx S Sch L ch L .. 2