MAX15059AATE+T

Special Purpose Regulators Overview

The MAX15059AATE+T is a fixed-frequency pulse-width modulation (PWM) boost DC-DC converter designed for avalanche photodiode (APD) biasing. It integrates an internal power switch and a high-side current monitor with a 1000x dynamic range, capable of detecting currents from 500nA to 4mA. The device operates from a 2.8V to 5.5V input supply and delivers up to 76V output voltage with a maximum output power of 300mW. It features adjustable current limiting with a 1µs response time, internal soft-start, and thermal shutdown protection.

Special Purpose Regulators Feature Summary

• Integrates a high-side current monitor providing precise detection of low-level APD leakage and photocurrents across a wide dynamic range.
• Features adjustable current limiting circuitry that protects the APD from optical power transients with rapid response capabilities.
• Includes internal soft-start functionality to effectively suppress inrush input current during converter startup.

Special Purpose Regulators Applications

• Avalanche photodiode biasing circuits
• Optical communication receiver front-ends
• Lidar systems requiring precise APD control

Special Purpose Regulators Procurement Notes

Verify the specific suffix 'AA' against official Analog Devices documentation to confirm temperature grade and package variant. Ensure compatibility with existing PCB footprints for the TQFN-EP package. Confirm RoHS compliance status through the manufacturer's latest certification documents before finalizing procurement plans.

Special Purpose Regulators Selection Notes

Select this component when designing APD bias supplies requiring integrated current monitoring and protection. The fixed 400kHz switching frequency simplifies filter design compared to variable frequency alternatives. Consider the 300mW power limit when sizing external inductors and ensuring adequate thermal dissipation for the application environment.

Special Purpose Regulators Part Context

This part belongs to the MAX15059 family of high-voltage boost converters specialized for optoelectronic applications. It complements evaluation kits like the MAX15059EVKIT+ by providing the core controller logic in a compact surface-mount package suitable for dense electronic assemblies.

Special Purpose Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Analog Devices technical support for qualified replacements or cross-reference options based on specific electrical requirements.

Special Purpose Regulators FAQ

What is the dynamic range of the integrated current monitor?

The integrated current monitor provides a 1000x dynamic range, allowing for high-precision detection of currents ranging from 500nA to 4mA.

How does the device protect the APD from optical power transients?

The device features adjustable current limiting with a fast 1µs response time, which effectively clamps the current to protect the APD during sudden increases in optical power.