S-1701E2521-U5T1G

Overview

The S-1701E2521-U5T1G is a dual-output low dropout (LDO) voltage regulator from ABLIC's S-1701 series. It provides fixed output voltages of 2.1 V and 2.5 V with a maximum output current of 400 mA per channel. The device features a typical quiescent current of 85 µA, ensuring efficient power management. It operates within an input voltage range supporting these outputs and maintains performance across a temperature range of -40°C to +85°C. Packaged in an SOT-89-5 surface-mount format, it integrates voltage detection capabilities alongside regulation.

Feature Summary

• Dual independent fixed output channels providing simultaneous regulated voltages
• Ultra-low quiescent current consumption for extended battery life in portable devices
• Integrated voltage detection function for system monitoring and control
• High accuracy fixed output voltage regulation with minimal external component requirements

Applications

• Portable electronic devices requiring multiple stable supply rails
• Battery-powered systems needing efficient power management
• Embedded circuits requiring integrated voltage supervision
• Consumer electronics with strict size and power constraints

Procurement Notes

Verify the specific part number suffix against official ABLIC documentation to confirm pinout and package configuration. Ensure compatibility with your PCB footprint, specifically the SOT-89-5 outline. Cross-reference the datasheet for thermal dissipation requirements under your expected load conditions. Confirm RoHS compliance status if required by your manufacturing standards. Always check for the latest revision notes regarding any functional updates or handling instructions.

Selection Notes

Select this component when dual isolated outputs are necessary from a single regulator IC. The 400 mA current rating suits moderate load applications. Consider the 85 µA quiescent current for battery-operated designs where standby power is critical. Verify that the input voltage range accommodates your source while maintaining the specified dropout voltage. The integrated detection feature may eliminate the need for separate voltage monitor ICs, simplifying the bill of materials.

Part Context

This device belongs to the S-1701 series of dual-output LDO regulators designed by ABLIC. The series emphasizes low power consumption and compact packaging for modern portable electronics. The S-1701E2521 variant specifically targets applications requiring 2.1 V and 2.5 V rails. It complements other ABLIC PMIC solutions by offering integrated detection functions typically found in more complex power management units.

Replacement Considerations

Check ABLIC's official substitution guide for direct replacements within the S-1701 family. Verify pin-to-pin compatibility with existing SOT-89-5 footprints. Ensure electrical parameters such as dropout voltage and quiescent current meet design specifications. Consult distributor databases for availability of equivalent dual-output LDOs if sourcing constraints exist.