LED照明驱动器 4ch 100mA/ch LED driver
Description
The SC504 is a 4-channel, highly integrated, high-efficiency 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, phase-shifted PWM
dimming, analog dimming, a flexible output configuration, an I2C interface, and numerous protection features.
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
4 Strings, up to 20mA/String
Current Matching ±%
Current Accuracy ±2%
PWM Dimming
String-by-String Phase Shifting
Input Dimming Frequency 00Hz-30kHz
User Selectable 9 or 0-Bits Dimming Resolution
5-Bits Analog Dimming
I2C Interface
Fault Status — Open/Short LED, UVLO, OTP
Device Control: PLL Setting
Protection Features
Open/Shorted LEDs 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