KIT34844AEPEVBE 評估板支持 34844/A,這是一款高效率 LED
驅(qū)動器,適用于 10 英寸至 20 英寸以上的 LCD
顯示器背光照明。 MC34844/A 采用 7.0 至 28V
電源供電,能夠驅(qū)動 10 個并聯(lián)燈串中多達 160 個 LED。 10 個串中的
電流匹配在 2% 以內(nèi),并且可以通過 I2C/SM
總線接口進行編程。 34844/A 還包括一個用于 LED 調(diào)光的脈沖寬度監(jiān)視器 (PWM) 發(fā)生器。 LED 可以調(diào)暗至 256 級之一,可通過 I2C/SM 總線接口進行編程。高達 65,000:1(256:1 PWM、256:1 電流 DAC)調(diào)光比
說明
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KIT34844AEPEVBE Evaluation board supports the 34844/A, which is a high efficiency, LED driver for use in backlighting LCD displays from 10" to 20"+. Operating from supplies of 7.0 to 28V, the MC34844/A is capable of driving up to 160 LEDs in 10 parallel strings. Current in the 10 strings is matched to within 2%, and can be programmed via the I2C/SM Bus interface. The 34844/A also includes a Pulse Width Monitor (PWM) generator for LED dimming. The LEDs can be dimmed to one of 256 levels, programmed through the I2C/SM Bus interface. Up to 65,000:1 (256:1 PWM, 256:1 Current DAC) dimming ratio