MAX16820ATT+T

LED Driver IC Overview

The MAX16820ATT+T is a step-down constant-current high-brightness LED driver designed for automotive and architectural lighting. It operates from an input voltage range of 4.5V to 28V and features a 5V/10mA on-board regulator. The device utilizes a hysteretic control algorithm with no external compensation, ensuring fast response during load transients. It supports up to 2MHz switching frequency, allowing for small component sizes. The MAX16820 specifically offers 10% inductor current ripple, compared to the 30% ripple of the MAX16819 variant.

LED Driver IC Feature Summary

• High-side current sensing minimizes external components while delivering ±5% LED current accuracy
• Dedicated PWM dimming input enables wide-range pulsed dimming with up to 20kHz maximum efficiency
• Hysteretic control architecture eliminates the need for external compensation networks

LED Driver IC Applications

• Automotive interior and exterior lighting
• Architectural lighting systems
• Ambient lighting applications
• LED bulbs such as MR16

LED Driver IC Procurement Notes

Verify the specific suffix ATT against the official Analog Devices datasheet to confirm package type and temperature rating. Ensure compatibility with the 4.5V to 28V input range requirements. Confirm that the 10% inductor current ripple specification meets the design constraints, distinguishing it from the 30% ripple variant. Check for RoHS compliance status in the latest documentation.

LED Driver IC Selection Notes

Select this component when a cost-effective step-down solution is required for high-brightness LEDs. It is suitable for designs needing a wide input voltage range without external compensation. Choose this part over the MAX16819 if lower inductor current ripple (10%) is preferred. Ensure the application can accommodate the 2MHz switching frequency for optimal component size reduction.

LED Driver IC Part Context

This device belongs to the MAX16819/MAX16820 family of high-brightness LED drivers. It shares core functionalities with the MAX16819 but differs in inductor current ripple specifications. Both parts are designed for similar illumination applications, offering integrated regulation and high-side current sensing capabilities within a compact surface-mount package.

LED Driver IC Replacement Considerations

The MAX16819ATT+T is a functional substitute within the same family, differing primarily in its 30% inductor current ripple compared to the MAX16820's 10%. Verify that the higher ripple of the MAX16819 is acceptable for the specific inductor selection and EMI requirements of the target design.