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Product Detailed Parameters
- Description：IC REG LINEAR 3V 400MA 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)：3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.42V @ 400mA (Typ)
- Current - Output：400mA
- Current - Quiescent (Iq)：65 µA
- Current - Supply (Max)：-
- PSRR：75dB (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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Overview
The FT533IA is a linear voltage regulator IC from Fremont Micro Devices Ltd, featuring a positive fixed output of 3V and a maximum load current of 400mA. It utilizes an SOT-23-5 package (SC-74A) for compact integration. The device exhibits a typical dropout voltage of 0.42V at full load. It operates within a temperature range of -40°C to 85°C. This component is classified as obsolete and is no longer manufactured by the producer.
Feature Summary
- Provides a stable positive fixed voltage output suitable for power management applications
- Designed with low dropout characteristics to maintain regulation under varying load conditions
- Utilizes a small outline transistor package for space-constrained circuit board layouts
Applications
- Portable electronic devices requiring regulated 3V power rails
- Battery-powered systems needing efficient linear regulation
- Embedded circuits utilizing SC-74A footprint constraints
Procurement Notes
This component is officially marked as obsolete and no longer manufactured by Fremont Micro Devices Ltd. Procurement should focus on verified substitute part numbers or alternative sources for existing stock. Buyers must confirm authenticity and condition carefully due to the discontinued status. Verify compatibility with replacement options before acquisition.
Selection Notes
Engineers selecting this part should note its discontinuation status. Design reviews must prioritize compatible replacements that match the 3V output, 400mA current capacity, and SOT-23-5 package dimensions. Ensure thermal performance meets requirements given the 0.42V dropout characteristic at maximum load within the specified operating temperature range.
Part Context
Fremont Micro Devices Ltd specializes in non-volatile memory and power management integrated circuits. The FT533IA belongs to their linear voltage regulator portfolio, designed for fixed-output applications. As a fabless design company, Fremont focuses on platform chip development. This specific regulator represents their historical offerings in low-dropout linear regulation technology.
Replacement Considerations
View substitutes provided by the manufacturer for direct replacements. Ensure any alternative component matches the 3V output, 400mA rating, and SOT-23-5 package form factor. Verify electrical specifications against original datasheet parameters to maintain circuit integrity.
