
Semtech Corporation
Description
The SC5012/Q is a 4-channel high-precision, high-efficiency step-up (Boost) HB LED driver designed for back light applications. It features wide input voltage range (4.75V to 45V) , flexible output configuration, wide analog and PWM dimming range, phase shifting, optional fading,
external boost controller frequency synchronization (FSYNC), I2C interface, and numerous protection features.
FEATUREs
Input Voltage — 4.75V to 45V
Output Voltage — Up to 65V
Step-up (Boost) Controller
Ultra-Fast Transient Response
Programmable Switching Frequency
External Sync Frequency for Boost Controller
Linear Current Sinks
4 Strings, up to 150mA/String
Current Matching ±1%
Current Accuracy ±2%
PWM Dimming
String-by-String Phase Shifting
Dimming Frequency 100Hz-30kHz
User Selectable 9 or 10 Bits Dimming Resolution
Optional Synchronization to VSYNC/HSYNC Signal
External Frequency Synchronization, FSYNC
8-bit Analog Dimming
I2C Interface
Fault Status — Open/Short LED, OTP
Device Control: SYNC Freq, PLL Setting
Protection Features
Open/Shorted LED(s) and adjustable OVP
Over-Temperature
4mm X 4mm 24 Ld QFN Package
AEC-Q100 Qualified Version Available
APPLICATIONs
Medium-sized LCD Panel
Automotive Car Navigation/Information Display
LCD Monitors
Automotive AEC-Q100 Qualified Application