S-1701B5042-U5T1G

Overview

The S-1701B5042-U5T1G is a dual-output low dropout (LDO) voltage regulator from ABLIC's S-1701 series, housed in an SOT-89-5 surface-mount package. It provides fixed output voltages of 4.2 V and 5 V with a maximum continuous output current of 400 mA per channel. The device features a typical quiescent current of 85 µA and maintains a voltage regulation accuracy of 1%. It operates within a temperature range of -40°C to +85°C, dissipating up to 1 W of power. Key electrical characteristics include a line regulation of 0.2%/V and a load regulation of 40 mV.

Feature Summary

• Integrates two independent fixed-voltage LDO regulators into a single compact component
• Combines voltage regulation functionality with built-in voltage detection capabilities
• Designed for automotive applications with high reliability and thermal stability

Applications

• Automotive electronic control units requiring multiple stable voltage rails
• Infotainment systems needing simultaneous 5V and 4.2V power supplies
• Sensor modules utilizing the integrated voltage detection feature

Procurement Notes

Verify the specific suffix U5T1G against official ABLIC documentation to confirm the exact pinout and tape-and-reel specifications. Confirm RoHS compliance status through the manufacturer's latest environmental declaration. Ensure the ordering quantity aligns with the standard factory packaging requirements specified in the product datasheet.

Selection Notes

Select this component when a design requires two distinct regulated outputs from a single package to save board space. The 400 mA output current capability supports moderate load demands. Verify that the input voltage exceeds the highest required output voltage by at least the dropout margin. Consider the SOT-89-5 package thermal performance for the expected power dissipation levels.

Part Context

This part belongs to the ABLIC S-1701 series of automotive-grade linear regulators. The series is characterized by low current consumption and high accuracy, designed specifically for safety-critical automotive electronics. The S-1701 family offers various output voltage combinations and packages to suit different system architectures.

Replacement Considerations

Check for other S-1701 variants with identical output voltages but different packages if footprint constraints change. Verify compatibility with alternative dual-output LDOs only if they match the 400 mA current rating and 1% accuracy specification.