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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 500MA PPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.3V @ 500mA
- Current - Output：500mA
- Current - Quiescent (Iq)：2 mA
- Current - Supply (Max)：12 mA
- PSRR：80dB ~ 65dB (120Hz ~ 65dB)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Supplier Device Package：PPAK
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LF33CPT-TRY is a fixed low-dropout (LDO) linear voltage regulator manufactured by STMicroelectronics, delivering a stable 3.3 V output at up to 500 mA. It operates with an input voltage range of 3.0 V to 16.0 V and features a typical dropout voltage of 400 mV at full load. The device includes an inhibit function for power management control. Packaged in a surface-mount PPAK package, it supports operation from -40°C to +125°C.
Feature Summary
- Integrated inhibit pin for precise power sequencing and shutdown control
- Very low dropout voltage capability for efficient battery-powered applications
- Fixed 3.3 V output ensures stable regulation under varying load conditions
Applications
- Portable electronic devices requiring efficient power management
- Battery-operated systems needing low quiescent current
- Embedded circuits requiring stable 3.3 V logic supply
Procurement Notes
Verify the exact suffix 'TRY' against official STMicroelectronics documentation to confirm package type and reel specifications. Confirm availability status as distribution channels may list obsolete or discontinued variants. Ensure compatibility with existing PCB footprint and thermal design requirements before procurement.
Selection Notes
Select this component when a fixed 3.3 V output with 500 mA capacity and inhibit functionality is required. Consider the PPAK package for space-constrained designs. Verify input voltage does not exceed 16 V maximum rating. Compare dropout characteristics against load requirements to ensure regulation stability.
Part Context
Part of the LF series of very low drop voltage regulators with inhibit. Designed for applications requiring high efficiency and compact size. Manufactured by STMicroelectronics using advanced semiconductor processes for reliability and performance in consumer and industrial electronics.
Replacement Considerations
Check for direct substitutes like LF33CDT-TR or LF33ABDT-TR if package differences are acceptable. Verify electrical parameters match exactly. Consult manufacturer obsolescence notices for long-term supply assurance.
