S-19311BFQA-E8T1U4

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The S-19311BFQA-E8T1U4 is a linear voltage regulator IC manufactured by ABLIC Inc. It provides a fixed positive output of 5V with a maximum load current of 200mA. The device operates within an input voltage range up to 36V and features low line regulation of 0.02%/V and load regulation of 20mV. Packaged in an 8-pin HSOPA (exposed pad) surface-mount package, it supports operation temperatures from -40°C to 125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Automotive-grade reliability with 125°C operating temperature capability
• High input voltage tolerance up to 36V for robust power management
• Integrated protection mechanisms including thermal shutdown and current limiting

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Power supply stages in automotive electronic control units
• Voltage regulation for sensors in harsh thermal environments
• Backup power systems requiring stable 5V rails

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix E8T1U4 matches the required tape-and-reel packaging configuration. Confirm that the exposed pad thermal design aligns with the target PCB layout for adequate heat dissipation at 125°C ambient conditions. Ensure the 36V absolute maximum rating exceeds the system's peak input voltage under all transient conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a high-voltage tolerant LDO is required for automotive applications. The 200mA output capacity suits moderate load scenarios where efficiency is secondary to simplicity and noise performance. The 8-HSOPA package offers a compact footprint suitable for space-constrained board designs while providing necessary thermal conductivity through the exposed pad.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the S-19311 series of automotive linear regulators designed for high-input voltage applications. The series is characterized by its ability to handle up to 36V inputs while delivering stable regulated outputs. It is engineered specifically for the demanding environmental conditions found in modern vehicle electronics, ensuring long-term stability and safety.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct substitutes must match the 5V output, 200mA current rating, and 8-HSOPA package. Verify pinout compatibility and thermal resistance characteristics. Alternative parts should also meet AEC-Q100 automotive qualification standards if used in certified vehicle systems.