POWER MANAGEMENT PRODUCT BRIEF LED Drivers Power Solutions GENERAL FEATURES • Wide VIN range: 4.5V to 45V –– Guarantees flicker free operation • VOUT up to 65V –– Higher voltage minimizes number of LED strings • Up to 240mA per Channel +/- 2% matching –– Provides uniform brightness across all LEDs • Advanced dimming control –– Phase shifted operation lowers output voltage ripple –– Reduces output capacitor size –– PWM dimming up to 50kHz • Enable ultra-thin displays –– Up to 10x smaller inductor size • AEC-Q100 qualified solutions LED Driver ICs POWER MANAGEMENT SOLUTIONS Semtech designs and manufactures an extensive line of LED driver ICs for LCD display backlight and LED camera flash applications. They include inductor-based boost LED drivers for series-connected LEDs and charge pump LED drivers and low-dropout current APPLICATIONS • Displays in: –– Automotive –– Industrial –– Computing –– Consumer • High brightness displays up to 12.4” sinks for parallel-connected LEDs. Each LED Driver topology is designed for optimal high efficiency in the smallest footprint with accurate current regulation, low noise, and a wide dimming range. VIN=4.5 to 27V Q2 (Optional) C2 DRVP VIN R1 VCC = 4.5 to 5.5V R2 R3 FLT EN SYNC PWMI R6 OVP FLT IO1 BG R7 4.7µF Q1 C5 CS VCC R5 R11 C4 DRVN VOUT up to 50V R4 PWMI R10 D1 UVLO SYNC C3 2.2µH C1 EN SDA SCL I2C www.semtech.com L1 R8 R9 IO2 IO3 IO4 IO5 IO6 SCP FSET ISET CPLL IO7 IO8 AGND PGND LED Driver Typical Application Schematic Up to 50mA/CH 1 POWER MANAGEMENT PRODUCTS | PRODUCT BRIEF SC5012Q HIGH BRIGHTNESS 4-CHANNEL 150MA/CH. LED DRIVER WITH PHASE-SHIFTING FEATURES BENEFITS • VIN 4.5V to 45V • Prevents false registering of short circuit fault • VOUT up to 65V • Enables ultra-thin display panels • 2.2µH inductor • Eliminates audible noise and waterfall effect, reduces EMI • Up to 150mA/Channel • Dimming profile is smooth with no visible steps • Adj Switch frequency 200kHz-2.2MHz • I2C interface • Channel matching: ± 1% • Low quiescent current • PWM dimming (100Hz–30kHz) • 9 or 10 Bit dimming resolution Up to 65V 4CH X 150mA/CH L1 4.5V-45V Supply • Phase shifted operation • Optional VSYNC / HSYNC / FSYNC SC5012Q • I2C Control / Configuration 5,000:1 PWM Dimming I2C Digital Control • 6µA Shutdown current • Extensive protection (Adj OVP, OCP, UVLO, Open/Short LED) • 4x4mm, QFN-24 • “Q” is AEC-Q100, Grade-2, qualified version 4x4mm MLPD-24 (Simplified) EN FSYNC SYNC I2 C ISET FSET SS OVP SCP 5 PWMI Extensive Features AEC-Q100 Automotive Grade High Brightness Backlighting Product Summary & Ordering Info Vin (V) Part # # CHs I/Ch (mA) Min SC441ATETRT 4 150 4.5 SC442ULTRT 10 30 4.5 Max Auto Grade Features Package (mm) Std Reel Qty 21 3 500:1, PWM dimming, low power dissipation TSSOP-20 2,500 21 - External Sync, PWM dimming, extensive protection MLPQ-28 (4x4) 3,000 MLP-UT-16 (3×3×0.6) 3,000 SC443ULTRT 3 30 4.5 27 - +/- 1% string to string current matching, programmable switching frequency SC445TETRT / SC445QTERT 4 150 4.5 27 2 Feed forward compensation => smaller input caps, PWM dimming TSSOP-20 2,500 SC446TETRT 3 100 4.5 27 - 500:1 PWM dimming, greater than 90% efficiency TSSOP-16 2,500 SC4541SKTRT 1 100 2.9 22 - Buck or Boost operation, integrated Schottky, high side sense SOT23-6 3,000 SC5010HULTRT 8 50 4.5 27 - I2C, VSYNC, 5000:1 Phase shifted PWM dimming MLPQ-28 (4x4) 3,000 SC5012MLTRT / SC5012QMLTRT 4 150 4.5 45 2 I2C, FSYNC, 5000:1 Phase shifted PWM dimming QFN-24 (4x4) 3,000 SC5014MLTRT 4 120 4.5 27 - I2C, Phase shifted PWM dimming QFN-20 (4x4) 3,000 SC5014AMLTRT 2 240 4.5 27 - I C, 5000:1 PWM dimming ratio QFN-20 (4x4) 3,000 2 visit www.semtech.com for more 200 Flynn Road, Camarillo, California 93012 • phone: (805) 498-2111 • fax: (805) 498-3804 Semtech and the Semtech logo are registered marks of Semtech Corporation. All other trademarks and trade names mentioned may be marks and names of their respective companies. Semtech reserves the right to make changes to, or discontinue any products described in this document without further notice. Semtech makes no warranty, representation or guarantee, express or implied, regarding the suitability of its products for any particular purpose. ©2016 Semtech Corporation. All rights reserved. LED-PB-16