MAX14919ATP+

Overview

The MAX14919ATP+ is a quad industrial low-side switch designed for robust power distribution. It features four N-channel outputs with a maximum current of 800mA per channel and a typical on-resistance of 140 milliohms. Operating within a load voltage range of 4.5V to 5.5V, it integrates comprehensive fault protection including over-temperature, reverse current, short-circuit, and under-voltage lockout. The device includes a 5V regulated output and status flags, housed in a 20-TQFN package.

Feature Summary

• Integrates reverse-current detection for enhanced system reliability
• Provides ±1kohm/42ohm surge protection for robust circuit defense
• Features pin-controlled operation allowing switching frequencies up to 200kHz
• Includes integrated 5V regulator and diagnostic status flags

Applications

• PLC and DCS systems
• Relay and solenoid drivers
• Motor control circuits
• Industrial digital outputs

Procurement Notes

Verify the specific suffix 'ATP+' corresponds to the TQFN-20 package variant. Confirm the 'A' grade indicates industrial temperature range (-40°C to 125°C). Ensure compatibility with 3.3V or 5V logic inputs as specified in the official datasheet. Cross-reference the manufacturer part number with Analog Devices documentation to confirm RoHS compliance and lead-free status before finalizing procurement.

Selection Notes

Select this component for applications requiring high-density low-side switching with integrated diagnostics. The 140mΩ on-resistance minimizes power dissipation compared to higher resistance alternatives. The inclusion of reverse-current protection makes it suitable for inductive loads where back-EMF is a concern. Verify that the 800mA per-channel limit meets the peak load requirements of the target application.

Part Context

This device belongs to the MAX14919 family of industrial-grade power switches. It is manufactured by Analog Devices Inc., formerly Maxim Integrated. The part is distinct from ADC variants like the MAX149 series, serving specifically as a power distribution solution. It complements other PMIC offerings by providing simple, fast switching capabilities for industrial environments.

Replacement Considerations

Check for direct substitutes within the MAX14919 family, such as MAX14919ATP+T, which may differ only in packaging format (tape and reel vs. cut tape). Verify pin-to-pin compatibility if considering alternative low-side switches from other manufacturers, ensuring similar on-resistance and fault protection thresholds are maintained.