LED Driver IC

Analog Devices µModule^® (micromodule) LED drivers are complete system-in-package (SiP) power management solutions with integrated dc-to-dc controllers, power transistors, input and output capacitors, compensation components, and inductors within a compact, surface-mount LGA package. µModule LED drivers effectively address the needs of engineers facing time and space constraints who need a highly efficient and reliable power management solution.

Analog Devices buck-boost LED drivers allow LED bias when the input voltage is either above or below the LED voltage. This is ideal in cases such as a single cell lithium-ion (Li-Ion) battery driving a single LED where the input voltage can vary from 4.2 V fully charged down to 2.7 V fully depleted, while the LED forward voltage can vary from 2 V to 4 V depending on brightness and temperature. Our LED drivers offer the highest efficiency, lowest noise, and the smallest footprints. Our synchronous 4-switch Buck-Boost LED Driver architecture transitions between buck, pass-through and boost operating modes seamlessly, offering a well-regulated output despite the wide variations of the input voltage. Other differentiating features include integrated Schottky diodes, accurate LED current matching, and multiple output capability.

Analog Devices current sink LED driver portfolio provides current control for multiple LEDs and protects LEDs and power supplies against thermal events, short circuits, overvoltage, and open circuit faults. These devices help enable a number of lighting technologies, including high brightness LED lighting and large format LED backlighting.

Analog Devices has a very broad line of LED drivers for backlighting applications. They are configured as either inductorless white LED drivers (for LEDs in parallel) or inductor-based white LED drivers (for LEDs in series). Topologies include boost regulator LED drivers, buck regulator LED drivers, buck-boost LED drivers, and more. Regardless of topology, these LED drivers offer the highest efficiency, lowest noise, and the smallest footprints. Other features include integrated Schottky diodes, accurate LED current matching, and multiple output capability.

Analog Devices LED driver support functions include matrix LED dimmers, a PWM generator, and LED ballasters targeted for automotive, display backlighting, handheld, and general lighting applications. Matrix LED dimmers operate in conjunction with an LED driver circuit configured as a current source, enabling individual LEDs within a string to be turned on and off. Fade transition between PWM dimming states offers more flexibility in designing matrix lighting with smoother dimming transitions. The programmable switching frequency of the matrix LED dimmer included in this LED Driver support function category helps to optimize efficiency and avoid critical frequency bands, including AM radio.

Analog Devices LED flash drivers support general LED lighting, building technology, scanning equipment, and a range of other technologies. A range of features, such as automatic phototransistor controls and overtemperature protection, as well as compact size and diverse programmability options, allow these devices to be used in a number of applications including: • High brightness LED lighting • Industrial lighting • Camera-enabled smartphones • Digital still cameras, camcorders, and PDAs • Smart PCs, tablets, notebooks, and similar devices

Analog Devices has a very broad line of LED drivers for backlighting applications. They are configured as either inductorless white LED drivers (for LEDs in parallel), or inductor-based white LED drivers (for LEDs in series). Topologies include boost regulator LED drivers, buck regulator LED drivers, buck/boost LED drivers, and more. Regardless of topology, these LED drivers offer the highest efficiency, lowest noise, and the smallest footprint. Other features include integrated Schottky diodes, accurate LED current matching, and multiple output capability.

Analog Devices’ offline LED driver portfolio includes devices with active power factor correction (PFC) specifically designed for driving LEDs from a universal input range of 90 VAC to 265 VAC. Our technology is optimized for LED applications requiring 4 W to over 100 W of LED power and is also compatible with standard TRIAC in-wall dimmers. The unique current sensing scheme employed by our products deliver a well-regulated current to the secondary side without using an optocouplers, which reduces cost and improves reliability—all in a simple, compact footprint.

Analog Devices step-down (buck) LED drivers are ideal for applications where the input voltage is above the LED voltage, as in many automotive or industrial applications. These LED drivers offer the highest efficiency, lowest noise, and the smallest footprints. Other features include integrated Schottky diodes, accurate LED current matching, and multiple output capability.

Analog Devices step-up (boost) LED drivers provide current control of multiple LEDs and support for high brightness LED lighting, large format LED backlighting, camera-enabled smart devices, and a range of related applications. Members of this portfolio include I2C-compatible programming interfaces, with compact, high efficiency features suited to your design needs.