熱點頻道

SC5012Q

 2016-06-15

【產品特性】

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

【產品應用】

Medium-sized LCD Panel
Automotive Car Navigation/Information Display
LCD Monitors
Automotive AEC-Q100 Qualified Application

【文字介紹】

SC5012Q是一款4通道高精度高效率升壓 LED驅動器設計用於背光應用。它具有寬輸入電壓範圍(4.75V至45V),靈活的輸出配置,寬模擬和PWM調光範圍,相移,I2C接口,以及眾多保護功能。
該升壓控制器,在200kHz的可調開關頻率至2.2MHz,可通過動態減少,同時保持LED串的電流精度,輸出電壓效率最大化。它提供了卓越的電壓和無需外部補償元件負載響應。每個線性電流中的精湛照明均勻度±1%的匹配,每串電流精度為±2%。一個外部電阻調節每串40-150mA的電流。此外,它還採用了9位或10位在從100Hz調光頻率到20kHz,同步到同步信號,助推振盪器PWM調光分辨率。串逐串相位移減小了輸入/輸出電容的需求,減少EMI,並提高調光的線性度。