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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 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)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.65V @ 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 FT533DA is a linear voltage regulator IC manufactured by Fremont Micro Devices Ltd. It provides a positive fixed output of 1.8V with a maximum current capacity of 400mA. The device utilizes an SOT-23-5 surface-mount package. It is classified as a low dropout (LDO) regulator within the PMIC category. The component is currently marked as obsolete.
Feature Summary
- Provides stable positive fixed voltage regulation
- Supports up to 400mA output current
- Designed for compact surface-mount integration
Applications
- Power management in electronic devices
- Low dropout LDO regulator circuits
- Battery-powered system power supplies
Procurement Notes
Verify component obsolescence status before procurement planning. Confirm availability through authorized distributors or secondary market suppliers. Ensure compatibility with existing PCB footprints and thermal requirements. Check for valid replacement alternatives if long-term supply is required.
Selection Notes
Select this component only if the specific 1.8V output and 400mA current rating match design requirements. Consider the SOT-23-5 package constraints for layout. Evaluate alternative active components if supply continuity is critical for the product lifecycle.
Part Context
This part belongs to the FT53x series of linear regulators from Fremont Micro Devices Ltd. The series includes various fixed voltage options. The FT533DA specifically targets applications requiring a 1.8V rail in space-constrained designs using small outline transistor packages.
Replacement Considerations
AP7335-25WG-7 and LDS3985M25R are listed as similar substitutes. Verify electrical parameter alignment, particularly output voltage and current limits, before substitution.
