S-1701E5042-U5T1G

Overview

The S-1701E5042-U5T1G is a dual-output low dropout voltage regulator manufactured by ABLIC. It provides fixed output voltages of 4.2 V and 5 V with a maximum output current of 400 mA. The device features an ultra-low quiescent current of 85 µA and operates within a temperature range of -40 °C to +85 °C. It utilizes an SOT-89-5 surface-mount package and offers a typical dropout voltage of 140 mV. Voltage regulation accuracy is specified at 1%, with line regulation at 0.2 %/V and load regulation at 40 mV. The component supports a power dissipation of 1 W.

Feature Summary

• Dual-output configuration providing simultaneous 4.2 V and 5 V rails
• Ultra-low quiescent current consumption for battery efficiency
• Integrated voltage detection functionality combined with regulation
• High precision voltage regulation with 1% accuracy

Applications

• Automotive electronic control units requiring stable dual voltage supplies
• Battery-powered devices needing extended operational life
• Embedded systems utilizing voltage monitoring and regulation
• Industrial equipment operating in wide temperature environments

Procurement Notes

Verify the specific suffix U5T1G against official ABLIC documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with SOT-89-5 footprint requirements during PCB layout. Confirm RoHS compliance status through the manufacturer's latest environmental declarations before finalizing procurement orders.

Selection Notes

Select this component when dual fixed outputs are required without external resistor networks. The 400 mA current capability suits moderate load applications. Consider the 140 mV dropout voltage for headroom calculations. Verify that the 85 µA quiescent current meets system standby power constraints. Ensure the SOT-89-5 package fits the available board space.

Part Context

This part belongs to the S-1701 series, which combines linear regulators with voltage detectors. The series is designed for automotive and general industrial applications. It integrates power management and monitoring functions into a single compact package. The E5042 designation indicates the specific output voltage combination of 4.2 V and 5 V.

Replacement Considerations

Check ABLIC datasheets for other S-1701 variants with identical output voltages but different packages or suffixes. Verify pinout compatibility if substituting with similar LDOs from other manufacturers. Ensure thermal performance matches the original design requirements.