LM3404HVMAX

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Analog Devices’ LM3404HVMAX is a Buck-Boost converter which operates over a wide input voltage range, making it the ideal choice for LED driver applications. The device is designed to provide constant current to the LED, ensuring controlled brightness levels over a wide range of input voltages. It also offers multiple design integration benefits, along with a wide dimming range.

The LM3404HVMAX is a synchronous buck-boost LED driver IC that supports up to 32V of input voltage from 4V to 16V. The device is characterized by its high efficiency and high output current capabilities which make it an ideal choice for direct LED driver applications. This LED driver IC features an onboard, adjustable current limit for LED protection, and can drive up to five LEDs in parallel with a maximum current of 6mA. The LM3404HVMAX also delivers more than 90% efficiency, reducing power losses.

The LM3404HVMAX includes an operating frequency of 1MHz, enabling fast steady-state loop response and efficient thermal performance. Its adjustable switching frequency allows designers to optimize performance while still meeting regulatory requirements. In addition, the LM3404HVMAX utilizes a wide dimming range of 0.5% to 100%, providing LED brightness control without sacrifice in LED efficacy.

The LM3404HVMAX provides high accuracy output current setting and integrated soft-start time of 20 milliseconds, eliminating the need for an external circuit. The device also supports PWM dimming or analog dimming, and is capable of light fading and blinking, allowing it to be used in a variety of LED light applications. Furthermore, the LM3404HVMAX includes current spread spectrum modulation which reduces the EMI and EMI bandwidth.

Overall, the LM3404HVMAX buck–boost LED driver IC is the perfect choice for applications requiring a wide input voltage range and high output current, such as automotive and industrial lighting applications. The device delivers high efficiency performance and incorporates an integrated soft-start time, current limit and dimming control. By utilizing this IC, designers can reduce component costs, design complexity and size.

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