代理產線

AS3695C

 2011-07-15

【基本資料】

【產品特性】

• Unique base current compensation for external bi-polar transistors
• increased accuracy
• possibility to choose cheaper low BETA transistors
• Improved accuracy between channels
• +/-0.2%
• Improved DAC accuracy
• +/-0.5% at 250mV,
• +/-1% from 200-500mV
• Internal PLL for HSync generation
• No need for high speed uP
• Improved safety features
• automatic channel turn off (open LED)
• Short LED detection – additional detection levels
• Register lock/ unlock function
- 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

【產品應用】

LED backlighting for LCD-TV sets and monitors

【文字介紹】

AS3695C是採用側光式(edge lighting)的16通道白光LED控制器, 在電源管理方面有傑出的表現。並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生高照明對比度,因此能實現最佳的畫質和3D效果。除此之外,高度精準的AS3695C採用novel power feedback regulation 控制外部電源,達到最高的系統效率並降低LED背光液晶電視的功耗。
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