Adjustable TFT Accepts Wide Input
Offering fully adjustable outputs, the dual-channel LTC3524 BIAS and white-LED driver can generate up to 25 mA at 6V for the AVDD channel, and up to 2mA at 20V and -20V for the respective VGH and VGL bias requirements with controlled power-up/power-down sequencing. Able to operate at up to 90 percent with voltages from 2.5V to 6V, the 4mm2 QFN-packaged synchronous rectification device can power up to 10 white LEDs (5 per channel) while offering a dimming ration of up to 200:1. Features include a 1.5 MHz switching frequency and a quiescent current of 200µA. Pricing starts at $2.25 for 1,000-piece quantities.