詮鼎集團旗下振遠科技代理的AMS奧地利微電子為一全球領先的高效能類比IC設計者及制造商 (SWX股票代碼：AMS),其推出兩款LED驅動IC，提供最明亮鮮艷的螢幕畫面。AS3695A是一款直下式(direct lighting)16通道白光LED驅動器，AS3695C則是采用側光式(edge lighting)的16通道白光LED控制器。這兩款產(chǎn)品擴充了奧地利微電子的新一代液晶電視LED背光模組驅動器及控制器產(chǎn)品線。

這兩款IC在電源管理方面都有杰出的表現(xiàn)，并且擁有絕佳的準確度，±0.5%的卓越驅動器準確度維持了精準的亮度和色彩搭配。±0.2%的通道對通道電流匹配可產(chǎn)生高照明對比度，因此能實現(xiàn)最佳的畫質和3D效果。除此之外，高度精準的AS3695A和AS3695C采用novel power feedback regulation 控制外部電源，達到最高的系統(tǒng)效率并降低LED背光液晶電視的功耗。

奧地利微電子面板照明部市場經(jīng)理Markus Luidolt表示:“奧地利微電子一直都以制造最棒的LED背光系統(tǒng)驅動IC而聞名。由于性能杰出，我們生產(chǎn)的驅動器已被許多世界頂級電視品牌采用。長久以來建立的市場地位使我們更清楚的了解直下式和側光式電視機，有助于我們開發(fā)出下一代的LCD驅動器。”

AS3659A和AS3695C這兩款元件均可通過一個串流周邊接口(SPI)連接埠進行編程，并內(nèi)建安全功能，包括熱斷電及LED開路(open)和短路檢測 。其他功能還包含通過10-bit DAC來設定線性電流、可編程的輸出回轉率(slew rate) 、與電視同步的H-Sync 和 V-Sync 輸入、直接PWM模式、欠壓自動關機、過電壓自動關機、溫度關機和故障中斷輸出。

Parts:AS3695A

AS3695A產(chǎn)品規(guī)格 :
- 16 channel LED driver for LED BLU
- 120 mA max current
- 30V max voltage
- Absolute current accuracy +/- 0.5%
- Channel to channel accuracy +/-0.2%
- Each channel can be controlled individually
-SPI Interface (no I2C)
- Output slew rate programmable to reduce EMI
- H-Sync, V-Sync inputs - synchronize with TV
- Two Power supply feedback lines
- Safety features:
-Undervoltage detection (Open LED )
-Overtemperature protection
-Auto-shut down
- MLF48 7x7, 0.5mm pitch

AS3695A產(chǎn)品特性：
• Maximum voltage 30V
• Maximum current 120mA
• Improved accuracy between channels
• +/-0.2%
• Improved DAC accuracy
• +/-0.5% at 250mV,
• +/-1% from 200-500mV
• Improved safety features
• automatic channel turn off (open LED)
• Register lock/ unlock function
• Reverse PWM feature
• 8kV ESD protection
• Significant cost down because of reduced maximum voltage & current specification

AS3695A產(chǎn)品應用：
LED backlighting for LCD-TV sets and monitors

Parts:AS3695C
AS3695C產(chǎn)品規(guī)格 :
- 16 channel LED controller for LED BLU
- Unique base current compensation
- Increase driving capability of BJT – 3mA
- Absolute current accuracy +/- 0.5%
- Channel to channel accuracy +/-0.2%
- Each channel can be controlled individually
-SPI Interface (no I2C)
- Output slew rate programmable to reduce EMI
- H-Sync, V-Sync inputs - synchronize with TV
- Integrated PLL
- Two Power supply feedback lines
- Safety features:
-Undervoltage detection (Open LED )
-30V PIN for LED short detection
-Overtemperature protection
- MLF64 9x9, 0.5mm pitch
- LQFP64 14x14, 0.8mm pitch