AMS微電子推出為液晶電視設(shè)計(jì)的高精準(zhǔn)度LED驅(qū)動(dòng)芯片

詮鼎集團(tuán)旗下振遠(yuǎn)科技代理的AMS奧地利微電子為一全球領(lǐng)先的高效能類比IC設(shè)計(jì)者及制造商 (SWX股票代碼：AMS),其推出兩款LED驅(qū)動(dòng)IC，提供最明亮鮮艷的螢?zāi)划嬅?。AS3695A是一款直下式(direct lighting)16通道白光LED驅(qū)動(dòng)器，AS3695C則是采用側(cè)光式(edge lighting)的16通道白光LED控制器。這兩款產(chǎn)品擴(kuò)充了奧地利微電子的新一代液晶電視LED背光模組驅(qū)動(dòng)器及控制器產(chǎn)品線。

這兩款I(lǐng)C在電源管理方面都有杰出的表現(xiàn)，并且擁有絕佳的準(zhǔn)確度，±0.5%的卓越驅(qū)動(dòng)器準(zhǔn)確度維持了精準(zhǔn)的亮度和色彩搭配?！?.2%的通道對(duì)通道電流匹配可產(chǎn)生高照明對(duì)比度，因此能實(shí)現(xiàn)最佳的畫質(zhì)和3D效果。除此之外，高度精準(zhǔn)的AS3695A和AS3695C采用novel power feedback regulation 控制外部電源，達(dá)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(chǎng)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(qū)動(dòng)IC而聞名。由于性能杰出，我們生產(chǎn)的驅(qū)動(dòng)器已被許多世界頂級(jí)電視品牌采用。長(zhǎng)久以來(lái)建立的市場(chǎng)地位使我們更清楚的了解直下式和側(cè)光式電視機(jī)，有助于我們開發(fā)出下一代的LCD驅(qū)動(dòng)器。”

AS3659A和AS3695C這兩款元件均可通過(guò)一個(gè)串流周邊接口(SPI)連接埠進(jìn)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(cè) 。其他功能還包含通過(guò)10-bit DAC來(lái)設(shè)定線性電流、可編程的輸出回轉(zhuǎn)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(dòng)關(guān)機(jī)、過(guò)電壓自動(dòng)關(guān)機(jī)、溫度關(guān)機(jī)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(yīng)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

?