S-1701B2521-U5T1G

Overview

The S-1701B2521-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 voltage regulation accuracy of ±1%. Operating temperatures range from -40°C to +85°C, with a maximum power dissipation of 1 W.

Feature Summary

• Integrates two independent fixed-voltage LDO regulators within a single compact package for space-constrained designs.
• Combines voltage regulation functionality with built-in voltage detection circuits to monitor supply stability.
• Maintains high energy efficiency through ultra-low standby current consumption suitable for battery-powered applications.

Applications

• Power management for portable electronic devices requiring multiple stable voltage rails.
• Voltage monitoring and regulation in embedded systems with strict size limitations.
• Backup power supply conditioning for microcontrollers and memory modules.

Procurement Notes

Verify the specific suffix codes against official ABLIC documentation to confirm pinout compatibility and thermal characteristics. Ensure that the required output voltage combination matches the exact part number designation. Confirm RoHS compliance status and lead times directly with authorized distributors prior to ordering.

Selection Notes

Select this component when dual isolated outputs are required from a single input source without external resistors. Compare dropout voltage specifications against the minimum input voltage available in the target circuit. Evaluate thermal performance based on the expected load current and ambient operating conditions to ensure safe operation within the 1 W dissipation limit.

Part Context

This device belongs to the S-1701 family of combo voltage detectors and regulators designed by ABLIC. These components are engineered to replace discrete regulator and detector solutions, reducing bill-of-materials complexity. The series targets consumer electronics and industrial control applications where reliability and small footprint are critical design constraints.

Replacement Considerations

Direct substitutes include other S-1701 variants with identical SOT-89-5 packaging and compatible output voltage pairs. Verify functional equivalence regarding voltage detection thresholds and quiescent current requirements before cross-referencing with alternative manufacturers' dual-channel LDO offerings.