MAX1693EUB

Overview

The MAX1693EUB is a dual-channel USB current-limited power switch manufactured by Analog Devices Inc./Maxim Integrated. It operates with an input voltage range of 2.7V to 5.5V and provides per-channel on-resistance of 140mΩ. The device supports up to 700mA output current per channel and includes integrated fault protection with adjustable current limiting. Key features include a built-in 7-bit ADC for monitoring chip temperature, per-channel output current, or VDD supply voltage. It is housed in a compact uMAX-10 package and is designed for surface-mount installation.

Feature Summary

• Integrated 7-bit ADC enables real-time monitoring of internal die temperature, individual channel output currents, and the main supply voltage (VDD).
• Dual-channel architecture with low 140mΩ on-resistance per channel ensures efficient power distribution for USB applications.
• Built-in fault protection mechanisms manage overcurrent conditions with adjustable current limiting thresholds.

Applications

• USB hub power distribution circuits
• Portable electronic device power management
• Peripheral interface protection

Procurement Notes

Verify the specific suffix (e.g., EUB vs EUB+T) against the manufacturer's official datasheet to confirm packaging type and RoHS compliance status. Confirm availability through authorized distributors as stock levels fluctuate. Ensure the selected variant matches the required thermal and electrical specifications for the target application environment.

Selection Notes

Select this component when dual-channel USB power switching with integrated diagnostic capabilities is required. The inclusion of the ADC allows for system-level health monitoring without external sensors. Consider the 140mΩ on-resistance for efficiency calculations and ensure the uMAX-10 package fits the PCB layout constraints. Verify that the 700mA per-channel limit meets the load requirements.

Part Context

The MAX1693 belongs to Maxim Integrated's family of USB current-limited switches. It is part of a series designed to protect downstream USB ports from short circuits and overloads while providing diagnostic feedback. This specific model offers dual channels in a small footprint, distinguishing it from single-channel variants or higher-current power distribution ICs within the same product line.

Replacement Considerations

Check for direct pin-compatible alternatives such as the MAX1693A or other dual-channel USB switches from Analog Devices. Ensure replacement parts maintain similar on-resistance and current-limiting characteristics. Verify that any substitute also includes the necessary ADC monitoring features if system diagnostics are critical.