MAX16833DAUE/V+

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The MAX16833DAUE/V+ is a member of the PMIC - LED Drivers family which provides a number of features and options, making it ideal for automotive, industrial, and medical lighting applications. The device is a 1-channel constant-current LED driver with an integrated switch-mode LED controller and offers full bridge, half bridge, and buck LED driver functions. Additionally, the device provides intelligent safety functions to reduce system complexity and save on cost by eliminating external fuse, PTC, and current sense resistor components.

The MAX16833DAUE/V+ supports a wide range of output voltages from 4.5V to 30V and output currents up to 1.2A. It includes an adjustable frequency peak current-mode control buck topology with shoot-through current protection and supports dimming control with 0-10V analogue control, pulse-width modulation (PWM) control, and direct control. The device also includes diagnostics and protections against open load, short circuit, and over temperature.

The MAX16833DAUE/V+ is an efficient device. It includes an input voltage range of 4.5 to 30V, provides up to 92% efficiency, and additionally offers automotive grade-2 (AEC-Q100) qualification for operation in the −40 to +125°C temperature range.

The MAX16833DAUE/V+ is ideal for driving LED strings that require multiple adjustable outputs and current ratios. It features advanced LED switch-mode control and provides low-dropout LED control to minimize power loss. Moreover, it supports over-voltage protection and over-load protection.

The working principle of the MAX16833DAUE/V+ is based on making use of the switched-mode current loop wherein it uses an internal voltage sense reference and an external voltage sense resistor to control the current output. When a LED load is connected, reflected voltage changes, thereby enabling accurate regulation of the LED current to the reference voltage. Additionally, the device can support pulse-width modulation (PWM) dimming and supports linear, resistive 0-10V, digital dimming, and direct dimming mode.

The MAX16833DAUE/V+ supports fast startup and provides UVLO, as well as thermal shutdown protection. It also allows for a wide range of operating voltage. The device is furthermore optimized to reduce total electromagnetic interference by employing a low-RDS(ON) upper switch that limits switching power consumption from 23mW at light load to 7.9mW at full load. Finally, the device features an ultra small-footprint of 4mm x 3.0mm in thermally enhanced 8-pin leadless UDFN package.

The MAX16833DAUE/V+ is a high-performance, easy-to-use solution for driving LED strings. It offers a high level of integration, adjustable output current and voltage, as well as multiple dimming modes. Moreover, it incorporates protection mechanisms, including short circuit, open load, and over-temperature protection, ensuring enhanced safety and reliability. This device is suitable for a broad range of LED lighting applications, including automotive, industrial, and medical lighting.

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