S-1701U1815-U5T1G

Overview

The S-1701U1815-U5T1G is a CMOS low-dropout regulator manufactured by ABLIC Inc. It operates with an input voltage range of 2V to 6.5V and provides a fixed 1.8V output. The device supports up to 400mA output current with a typical dropout voltage of 340mV at 100mA. It features ultra-low quiescent current of 85µA and high power supply rejection ratio. The unit is housed in an SOT-89-5 package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Ultra-low quiescent current consumption for extended battery life
• Integrated voltage detector function for system monitoring
• High stability with ceramic capacitors only
• Compact surface-mount packaging for space-constrained designs

Applications

• Battery-powered portable devices
• Converter circuits in mobile electronics
• Voltage regulation for sensor modules
• Backup power management systems

Procurement Notes

Verify the specific suffix U5T1G against the official ABLIC datasheet to confirm pinout and thermal characteristics. Confirm RoHS compliance status through the manufacturer's latest documentation. Ensure the source is an authorized distributor to guarantee component authenticity. Check for any product change notifications that may affect electrical parameters or packaging specifications before finalizing procurement orders.

Selection Notes

Select this component when a fixed 1.8V rail is required with minimal standby current draw. The integrated voltage detector simplifies design by removing external monitoring components. Verify that the load current does not exceed 400mA and that input voltage remains within the 2V to 6.5V window. Consider the SOT-89-5 thermal performance for high-power dissipation scenarios in enclosed enclosures.

Part Context

This part belongs to the S-1701 series of low-dropout regulators from ABLIC. The series is characterized by ultra-low power consumption and integrated voltage detection capabilities. It targets applications requiring efficient power management in compact form factors, such as wearable technology and IoT sensors, where battery longevity and small footprint are critical design constraints.

Replacement Considerations

Check for direct pin-compatible alternatives within the S-1701 family with different output voltages. Verify if other manufacturers offer equivalent 1.8V LDOs with similar quiescent current specs. Ensure replacement parts maintain the same voltage detector threshold requirements if system monitoring is critical.