MAX16801BEUA+T

The MAX16801BEUA+T is a versatile Pulse Width Modulation (PWM) and Linear Current Regulation (LCR) LED driver that offers both linear and PWM dimming capability. The device integrates two integrated N-channel MOSFETs, a programmable oscillator, and a low-noise differential Amplifier between the LED input pins. It enables LED current control over a wide range of LED forward voltage values while achieving simple, highly effective LED light output control. The MAX16801BEUA+T is ideal for applications where a constant current LED driver with dimming capability is needed.

Application Fields

The MAX16801BEUA+T offers designers the flexibility to control a wide range of LED devices such as bulbs and panels for indoor and outdoor applications, automotive indicator lamps, backlights for LCDs, low-current lighting for displays, and general-purpose lighting applications. In addition, the device can be used in outdoor lighting fixtures, accent and task lighting, and in signage and signboards.

Working Principle

The MAX16801BEUA+T features two low on-resistance integrated N-channel MOSFETs and programmable oscillator that allows the device to switch the LED current at frequency of up to 1MHz. The device also features a differential Amplifier with a gain of around 100x that is connected between the sense and control input pins. The Amplifier helps to accurately regulate the LED current. The Amplifier’s gain is adjustable and can be set to achieve a wide range of maximum brightness levels or dimming profiles. The device is configured and programmed via a serial port.

Conclusion

The MAX16801BEUA+T offers designers a convenient and versatile LED driver solution. The device combines high performance, low power consumption and high efficiency with a programmable oscillator, differential amplifier and two integrated N-channel MOSFETs, enabling LED current control over a wide range of LED forward voltage values and ultimately providing simple, highly effective LED light output control. The device is suitable for many LED applications such as automotive indicator lamps, LCD backlights, low-current lighting for displays, and general-purpose lighting applications.