STLD40D

STLD40D White LED power supply for large display backlight Features ■ Inductor switches boost controller ■ PFM mode control ■ High efficiency over wide range of input voltage from 3.0 V to 5.5 V ■ Over voltage protection with automatic restart ■ Adjustable peak current limit ■ Enable pin with possibility of PWM dimming control ■ Low shutdown current < 1 µA ■ Small external component ■ Good load and line regulation ■ QFN8 3 x 3 mm Applications ■ White LED supply for LCD backlight ■ Mobile phone ■ PDA and organizers ■ Any handsets powered form 3.0 V to 5.5 V QFN8 (3 x 3 mm) resistor RLED. The device can be turned ON/OFF through the logic enable signal pin EN. By applying a low frequency PWM signal the LEDs can be dimmed. The maximum peak inductor current can be programmed by connected a resistor RSET to the pin RSET. Description STLD40D is a boost converter that operates from 3.0 V to 5.5 V. It can provide an output voltage as high as 37 V and can drive u...