MAX14919AATP+

Overview

The MAX14919AATP+ is a quad industrial low-side switch manufactured by Analog Devices Inc./Maxim Integrated. It provides four independent N-channel outputs with a maximum current of 800mA per channel and a typical on-resistance of 140mΩ. The device operates within a load voltage range of 4.5V to 5.5V and features a parallel interface with non-inverted inputs. Key protection mechanisms include over-temperature, reverse current, short-circuit, and under-voltage lockout (UVLO). Additional features include a 5V regulated output and status flags. It is housed in a 20-TQFN (4x5) package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Integrates four independent low-side power switches with high-current capability for industrial applications.
• Includes comprehensive fault protection against over-temperature, reverse current, short circuits, and under-voltage conditions.
• Provides internal 5V regulation and status flagging for system monitoring and control.

Applications

• Industrial relay and solenoid driver circuits
• Power distribution systems requiring low-side switching
• Automotive electronic control units

Procurement Notes

Verify the specific suffix 'AATP+' to ensure correct packaging and tape-and-reel configuration. Confirm that the 20-TQFN footprint matches the PCB layout requirements. Check datasheet specifications for thermal dissipation needs given the 140mΩ resistance and 800mA current rating. Ensure input logic levels are compatible with the non-inverted parallel interface design.

Selection Notes

Select this component when a compact solution for multiple low-side loads is required within a 5V system. Consider the 140mΩ on-resistance for efficiency calculations and the integrated protection features for robustness. Evaluate the 20-TQFN package size against available board space. Verify that the industrial temperature range meets the environmental constraints of the target application.

Part Context

The MAX14919 belongs to Maxim's family of industrial low-side switches designed for driving inductive and resistive loads. It offers a balance of high current density and integrated protection in a small form factor. This series is commonly used in applications where reliable switching of multiple channels is necessary without external discrete components.

Replacement Considerations

Check for direct pin-to-pin replacements within the MAX14919 series or similar quad low-side switches from Analog Devices. Verify that any substitute maintains the 800mA current rating and 140mΩ on-resistance characteristics. Ensure compatibility with the 20-TQFN package and identical protection feature sets before integration.