S-13R1F40-N4T1U3

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The S-13R1F40-N4T1U3 is a positive fixed linear voltage regulator from the ABLIC S-13R1 series. It provides a stable 4V output with a maximum load current of 150mA. The device operates within an input voltage range of 2V to 5.5V and features a typical dropout voltage of 150mV at 100mA. It includes reverse current protection, overcurrent protection, and thermal shutdown. The quiescent current is 5µA, and it offers a typical PSRR of 70dB at 1kHz. The unit is housed in an SC-82AB (SOT-343) surface-mount package and supports operation from -40°C to +85°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Integrated reverse current protection prevents backflow when input voltage drops below output voltage.
• Built-in overcurrent protection and thermal shutdown circuits ensure device safety under fault conditions.
• Ultra-low quiescent current consumption minimizes power loss in battery-operated applications.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Portable electronic devices requiring low standby power consumption
• Battery-powered sensor modules and IoT nodes
• Embedded systems needing stable 4V logic supply rails

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix N4T1U3 against the manufacturer's latest datasheet to confirm pinout compatibility and tape-and-reel specifications. Ensure the ordering code matches the required 4V output variant. Confirm RoHS compliance status and lead times directly with authorized distributors or ABLIC Inc., as availability may vary by region and production batch.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component for designs requiring a fixed 4V output with minimal static current draw. The SC-82AB package suits space-constrained PCB layouts. Verify that the input voltage remains above 2V and that the load current does not exceed 150mA. Consider the 150mV dropout characteristic when designing for low headroom scenarios.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the S-13R1 family of CMOS LDO regulators designed for ultra-low power applications. Unlike the S-1313 series which offers higher currents, the S-13R1 focuses on minimizing quiescent current while maintaining robust protection features. The S-13R1F40 specifically denotes the 4V fixed output version within this low-power lineup.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct substitutes include other S-13R1 series variants with different output voltages if system requirements change. Cross-reference with similar ultra-low IQ LDOs from manufacturers like Microchip or Texas Instruments, ensuring pinout and electrical characteristics match the SC-82AB footprint.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the typical quiescent current of the S-13R1F40?

The typical quiescent current is 5µA, making it suitable for battery-powered applications.

Does this regulator support reverse current flow?

No, the S-13R1 series includes integrated reverse current protection to prevent backflow from the output to the input.