典型應用展示了 A8514 LED
驅動器的 SEPIC 配置,具有精確的輸入
電流檢測和 VSENSE 接地保護。 A8514 是一款用于小尺寸 LCD 背光的多輸出白光 LED 驅動器。它集成了一個電流模式升壓
轉換器、內部
電源開關和四個電流吸收器。該升壓轉換器最多可驅動 48 個 LED,每串 12 個 LED,電流為 80 mA。 LED 接收器可以
并聯在一起以獲得更高的 LED 電流,高達 320 mA。 A8514 可以使用 5 至 40 V 的單電源運行
說明
-
Typical Application showing SEPIC configuration, with accurate input current sense, and VSENSE to ground protection for A8514 LED Driver. The A8514 is a multi-output white LED driver for small-size LCD backlighting. It integrates a current-mode boost converter with internal power switch and four current sinks. The boost converter can drive up to 48 LEDs, 12 LEDs per string, at 80 mA. The LED sinks can be paralleled together to achieve even higher LED currents, up to 320 mA. The A8514 can operate with a single power supply, from 5 to 40 V