MAX16821AATI+

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The MAX16821AATI+ is a bi-directional, charge and discharge controllers for various modes of LED operation, including direct drive and constant-current/constant-voltage. This device features an integrated switches and a charge pump to drive a single LED with either an AC or DC supply. It easily configures an LED driver operating system that quickly adapts to changing LED output demands. The MAX16821AATI+ can perform LED current regulation on the LED sink path, as well as LED current regulation on the LED source path. It also features integrated current limiting, dynamic voltage control, and short-circuit protection.

The MAX16821AATI+ operates in a direct-drive mode, allowing the LED to be driven directly from an AC or DC source without needing an external driver or voltage converter. This helps reduce power supply noise, energy loss, and overall system cost. In the constant-current mode, the device utilizes a current sense amplifier for LED current sensing, an internal charge pump with FETs for LED voltage control, and low-noise current mirror for LED current control. The MAX16821AATI+ also integrates over-temperature protection with hysteresis, making it well-suited for applications in harsh environments. Additionally, the device provides high-impedance start-up and adjustable shutdown times. This helps maintain battery life and reduce application cost.

In sum, the MAX16821AATI+ is a bi-directional, charge and discharge controllers for various modes of LED operation, including direct drive and constant-current/constant-voltage. It offers excellent performance and features such as integrated current limiting, over-temperature protection with hysteresis, and dynamic voltage control. This makes the MAX16821AATI+ a particularly suitable choice for harsh environmental applications such as landscaping, vehicle lighting, and general lighting. Its high-power capabilities, low-noise current mirror, and proper protection make it an ideal choice for any LED driver application.

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