Diodes Introduces Programmable Dimming LED Driver with 30V MOSFET and Schottky Diode

Diodes introduces the AL3050 current mode step-up LED driver to provide programmable brightness for LED backlighting in portable devices. With advanced dimming features, small size, low BOM cost and high efficiency, this product is ideal for single-cell Li-Ion battery devices with small LCD panels, such as multifunction/smart phones, portable media players, GPS Receivers and other ultra mobile devices.

By integrating a 30V 0.6Ω MOSFET and a power Schottky diode, the AL3050 can drive up to eight LEDs in series and can connect multiple LED strings in parallel. The device features a normal PWM dimming mode with a deep dimming ratio of 100:1 and a single-line digital dimming mode with 32-step programmable brightness adjustment. The boost converter operates at a fixed switching frequency of 750kHz to reduce output ripple and improve conversion efficiency, and allows the use of small external components.

The AL3050 features robust LED short-circuit and LED open-circuit protection with system start-up current limiting and standard overcurrent, overvoltage and overtemperature protection to ensure reliable system performance.

For more information, please visit the company website.

Introduction to Diodes

Diodes Incorporated, a S&P SmallCap 600 Index and Russell 3000 Index, is the world's leading manufacturer and supplier of discrete, logic, analog and mixed-signal semiconductor products for consumer use. Different markets such as electronics, computers, communications, industry and automobiles. Diodes' products include diodes, rectifiers, transistors, MOSFETs, protection devices, special function arrays, single-gate logic, amplifiers and comparators, Hall effect and temperature sensors, covering LED drivers, AC-DC converters and controllers, DC- Power management devices such as DC switches and linear regulators, voltage references, and special features such as USB power switches, load switches, voltage monitors, and motor controllers.

Diodes' headquarters and US sales offices are located in Plano, Texas, USA and Milpitas, California, in Plano, Milpitas, California, Taipei, Taoyuan, Zhubei, and the United Kingdom. Chester and Neuhaus in Germany have design, marketing and engineering centers; wafer fabrication facilities in Kansas City and Manchester, Missouri, and one in Shanghai; in Shanghai, Jinan, Chengdu, Yangzhou , assembly and test facilities in Taipei, Hong Kong and Neuhaus, Germany; engineering, sales, warehousing and logistics offices in Taipei, Hong Kong, Shanghai, Shenzhen, South Korea, Manchester, and Munich; Sales and support offices are located around the world.