S-1701A2728-M5T1G

Overview

The S-1701A2728-M5T1G is a dual-output low-dropout (LDO) voltage regulator from ABLIC's S-1701 series, designed for applications requiring simultaneous power regulation and voltage monitoring. It provides fixed output voltages of 2.7 V and 2.8 V with a maximum output current of 400 mA. The device integrates a voltage detector function that monitors the main output, triggering an alarm when the voltage drops below a specified threshold. It operates within an input voltage range of 2 V to 6.5 V and maintains a typical quiescent current of 85 µA. The regulator features a dropout voltage of approximately 140 mV at 100 mA and offers high accuracy with a voltage regulation tolerance of 1%. It is housed in a compact SOT-23-5 surface-mount package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates dual LDO regulators with a combined voltage detection circuit for system supervision
• Maintains ultra-low quiescent current consumption to extend battery life in portable devices
• Provides stable fixed output voltages with high precision and low dropout characteristics
• Includes built-in protection mechanisms such as thermal shutdown and reverse current prevention

Applications

• Battery-powered portable electronics requiring efficient power management
• Mobile communication devices needing reliable voltage supervision
• Embedded systems utilizing microcontrollers with strict power constraints
• IoT sensors and modules requiring long-term operational stability

Procurement Notes

Verify the specific output voltage combination and detection threshold against the official datasheet before procurement, as suffixes define unique electrical parameters. Confirm the SOT-23-5 package availability and reel quantity requirements with the distributor. Ensure compliance with RoHS directives and check for any recent product change notifications that may affect pinout or performance specifications.

Selection Notes

Select this component when a single IC solution is needed for both power regulation and voltage monitoring to save board space. Compare the dropout voltage and quiescent current against alternative LDOs if efficiency under light load is critical. Ensure the input voltage range covers the minimum battery discharge curve while accounting for the required headroom for the LDO operation.

Part Context

This part belongs to the S-1701 series of combo voltage detectors and regulators by ABLIC Inc. The series is characterized by its low power consumption and integrated supervision functions, making it suitable for modern low-power electronic designs. The M5T1G suffix indicates the specific package type and environmental compliance status.

Replacement Considerations

Direct replacements include other parts from the S-1701 family with matching output voltages, such as S-1701A2729-M5T1G or S-1701A2730-M5T1G, provided the detection thresholds are compatible. Cross-reference with similar dual-output LDOs from other manufacturers only if pin compatibility and electrical specs match exactly.