FT531AA

$0.47

Description：IC REG LINEAR 1.2V 250MA SOT23-5
Series：-
Mfr：Fremont Micro Devices Ltd
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:fe2abd4a9776 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: Fremont Micro Devices Ltd

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 1.2V 250MA SOT23-5
Series：-
Mfr：Fremont Micro Devices Ltd
Package：Tape & Reel (TR),Cut Tape (CT)
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：6V
Voltage - Output (Min/Fixed)：1.2V
Voltage - Output (Max)：-
Voltage Dropout (Max)：0.4V @ 100mA (Typ)
Current - Output：250mA
Current - Quiescent (Iq)：36 µA
Current - Supply (Max)：-
PSRR：72dB ~ 60dB (1kHz ~ 10kHz )
Control Features：Enable
Protection Features：Over Current
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：SC-74A, SOT-753
Supplier Device Package：SOT-23-5
Grade：-
Qualification：-

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FT531AA

Overview

The FT531AA is a fixed-output linear low-dropout regulator manufactured by Fremont Micro Devices Ltd. It provides a fixed output voltage of 1.2V with a maximum continuous output current of 250mA. The device features a maximum input voltage rating of 6V and operates within an ambient temperature range of -40°C to +85°C. Key electrical specifications include a typical quiescent current of 36µA, a dropout voltage of 0.4V at 100mA, and power supply rejection ratios ranging from 72dB at 1kHz to 60dB at 10kHz. It is housed in a SOT-23-5 surface-mount package.

Feature Summary

Integrated enable control functionality for power management
Built-in overcurrent protection circuitry
Low quiescent current operation for efficiency

Applications

Battery-powered portable electronic devices
Embedded systems requiring stable 1.2V logic rails
Noise-sensitive analog signal conditioning circuits

Procurement Notes

Verify component authenticity through authorized distribution channels due to the part's discontinued status. Confirm that replacement sources offer equivalent electrical characteristics, specifically matching the 1.2V output and SOT-23-5 footprint. Review manufacturer product change notifications for any historical revisions affecting pin compatibility or thermal performance before finalizing procurement decisions.

Selection Notes

Select this component when a precise 1.2V rail is required with minimal static power consumption. Ensure the input voltage does not exceed the 6V absolute maximum rating. Consider the thermal dissipation capabilities inherent to the SOT-23-5 package under full load conditions. Verify that the required noise rejection levels align with the specified PSRR values across the operating frequency spectrum.

Part Context

This component belongs to the FT531 series of positive fixed linear regulators. It shares architectural similarities with other variants in the family, such as the FT531EA, which offers different fixed output voltages while maintaining identical packaging and protection features. The series is designed for compact applications where space constraints and low standby currents are critical design parameters.