MAX20051AUD/V+TG2W

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The MAX20051AUD/V+TG2W is a powerful little PMIC device for quad-current LED driver applications. It is an integrated circuit (IC) device that offers variable output current and provide excellent dimming control and protection features. The device supports a wide input voltage range from 3.0 V to 18 V and is suitable for a variety of LED applications such as automotive lighting, indoor lighting, display applications, and more.

Features

The MAX20051AUD/V+TG2W provides a couple of essential features to ensure reliable operation and a high level of protection. It offers over-voltage protection (OVP), over-temperature protection (OTP) and high peak current capability. Furthermore, the LED current can be programmed through an external resistor, allowing users to easily adjust the LED current. The device also supports both PWM and direct dimming control. It additionally features an active pre-charge circuit for low power dissipation when operating with multiple LED strings.

Application Field

The MAX20051AUD/V+TG2W is well-suited for a variety of LED applications. Its high peak current capability allows the device to drive high current LEDs with a wide voltage range. Additionally, its wide input voltage range allows the device to be used in automotive applications, including headlamps and tail lamps. The device is also suitable for indoor applications such as architectural lighting, decorative lighting, gaming displays, and many more.

Working Principle

The MAX20051AUD/V+TG2W is based on Buck-Boost topology. The device uses a lowside control FET to control the output current. The output current is proportional to the voltage across the FET, which is determined by a resistor (Rr). During dimming operation, the integrated current-sense amplifier applies the appropriate amount of current to the control FET, thus setting the output current. The PWM dimming signal can be either externally generated or the internal dimming feature can be used.

Conclusion

The MAX20051AUD/V+TG2W is a highly integrated and feature-rich PMIC device for LED driver applications. It offers a wide input voltage range, over-voltage protection, over-temperature protection, active pre-charge, and variable output current. The device is suitable for a variety of LED applications, including automotive lighting, indoor lighting, and display applications.

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