S-1701U2521-U5T1G

Overview

The S-1701U2521-U5T1G is a dual-output low dropout (LDO) voltage regulator from the ABLIC S-1701 series, housed in an SOT-89-5 surface-mount package. It provides fixed output voltages of 2.1 V and 2.5 V with a maximum continuous output current of 400 mA per channel. The device features a typical quiescent current of 85 µA and a maximum dropout voltage of 250 mV at 100 mA load. It operates within a temperature range of -40°C to +85°C and includes built-in overcurrent protection and thermal shutdown circuits for enhanced reliability.

Feature Summary

• Dual independent fixed output channels providing 2.1 V and 2.5 V rails
• Integrated voltage detection function combined with regulation
• Built-in overcurrent protection and thermal shutdown circuits

Applications

• Portable electronic devices requiring multiple stable voltage rails
• Battery-powered systems needing low quiescent current operation
• Embedded control circuits utilizing integrated voltage monitoring

Procurement Notes

Verify the specific suffix U5T1G corresponds to the SOT-89-5 package and reel packaging configuration. Confirm that the dual output requirements match the 2.1 V and 2.5 V specifications exactly. Ensure input voltage constraints are met to maintain the specified dropout performance under maximum load conditions.

Selection Notes

Select this component when dual regulated outputs are required in a compact footprint. The S-1701 series offers high accuracy and low noise suitable for sensitive analog or digital loads. Consider the thermal dissipation capabilities of the SOT-89-5 package relative to the expected power loss during operation.

Part Context

This part belongs to the S-1701 series of combo voltage detectors and regulators. The series is characterized by CMOS technology enabling low current consumption while maintaining high ripple rejection ratios. It is designed for applications where space constraints and power efficiency are critical design parameters.

Replacement Considerations

Direct substitutes within the S-1701 family include variants with different output voltage combinations but identical pinouts and electrical characteristics. Verify package compatibility and ensure the replacement part supports the same dual-output configuration.