S-19502AFKA-V9T1U4

Supervisors Overview

The S-19502AFKA-V9T1U4 is a positive fixed-output low-dropout (LDO) voltage regulator manufactured by ABLIC Inc. It provides a stable 3.3 V output with a maximum continuous current of 400 mA. The device operates within an input voltage range up to 36 V and features a typical dropout voltage of 300 mV at full load. It incorporates a built-in window watchdog timer and reset function for system protection. The component supports surface-mount installation in a TO-252-9S package and is rated for operation between -40°C and +125°C.

Supervisors Feature Summary

• Integrates a window watchdog timer and reset output for enhanced system reliability
• Provides high noise immunity with superior power supply ripple rejection
• Includes comprehensive protection against overcurrent, short circuits, and thermal overload

Supervisors Applications

• Automotive electronic control units requiring robust power management
• Industrial systems utilizing microcontrollers with watchdog requirements
• Embedded applications needing stable 3.3 V logic supply rails

Supervisors Procurement Notes

Verify the specific suffix codes against official datasheets to confirm pinout and functional compatibility. Confirm RoHS compliance status and automotive qualification requirements prior to integration. Ensure ordering quantities align with manufacturer reel specifications. Validate thermal performance parameters for the intended PCB layout and operating environment.

Supervisors Selection Notes

Select this component when a 3.3 V output with 400 mA capability is required alongside integrated watchdog functionality. Compare dropout voltage characteristics against other LDOs in the S-19500 series. Consider the TO-252-9S package constraints for thermal dissipation. Evaluate the need for external capacitors based on stability requirements specified in the technical documentation.

Supervisors Part Context

This part belongs to the S-19500 series of LDO regulators featuring built-in watchdog timers. It shares architectural similarities with the S-19501 and S-19503 models but differs in output current ratings and specific reset timing configurations. The series is designed for automotive and industrial environments demanding high reliability and noise resistance.

Supervisors Replacement Considerations

Consult official substitution lists for equivalent parts within the S-19500 family. Verify that alternative components match the 3.3 V output, 400 mA rating, and watchdog features. Ensure package compatibility and electrical parameter alignment before implementation.