Backlight LED Drivers, Texas Instruments### LED 驱动器,Texas Instruments
The LM3508 is a synchronous boost converter no external Schottky diode required that provides a constant current output. It is designed to drive up to 4 series white LEDs at 30mA from a single-cell Li-Ion battery. A single low power external resistor is used to set the maximum LED current. The LED current can be adjusted by applying a PWM signal of up to 100kHz to the DIM pin. Internal soft-start circuitry is designed to eliminate high in-rush current at start-up. For maximum safety, the device features an advanced short-circuit protection when the output is shorted to ground. Additionally, over-voltage protection and an 850kHz switching frequency allow for the use of small, low-cost output capacitors with lower voltage ratings. During shutdown, the output is disconnected from the input preventing a leakage current path through the LEDs to ground. The LM3508 is available in a tiny 9-bump chip-scale DSBGA package.
型号 | 品牌 | 下载 |
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LM3508TL/NOPB | TI 德州仪器 | 下载 |
LM358MX | National Semiconductor 美国国家半导体 | 下载 |
LM3524DM/NOPB | TI 德州仪器 | 下载 |
LM3526M-L/NOPB | TI 德州仪器 | 下载 |
LM3526MX-L/NOPB | TI 德州仪器 | 下载 |
LM3526MX-H/NOPB | TI 德州仪器 | 下载 |
LM3544M-L | TI 德州仪器 | 下载 |
LM3544M-L/NOPB | TI 德州仪器 | 下载 |
LM3525MX-L/NOPB | TI 德州仪器 | 下载 |
LM3526M-H/NOPB | TI 德州仪器 | 下载 |
LM3525M-H/NOPB | TI 德州仪器 | 下载 |