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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 500MA DPAK
- 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：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：DPAK
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LF33CDT-TRY is a fixed-output linear voltage regulator from the STMicroelectronics LFxx series, providing a stable 3.3 V output with a maximum load current of 0.5 A. It operates within an input voltage range of -0.5 V to 40 V and features a typical low dropout voltage of 0.45 V. The device incorporates an integrated on/off switch for power control and exhibits low quiescent current characteristics. It is housed in a DPAK surface-mount package and supports operation across a temperature range of -40 °C to +125 °C.
Feature Summary
- Integrated ON/OFF switch for precise power management
- Low dropout voltage capability for efficient regulation
- Low quiescent current design for energy conservation
- Robust thermal performance suitable for high-temperature environments
Applications
- Battery-powered electronic systems
- Low-noise power supply circuits
- Portable consumer devices requiring efficient voltage regulation
Procurement Notes
Verify the specific suffix 'TRY' against official STMicroelectronics documentation to confirm package type and reel specifications. Ensure compatibility with existing PCB footprints for the DPAK form factor. Cross-reference the part number with current availability status as distribution channels may vary.
Selection Notes
Select this component when a fixed 3.3 V rail is required with minimal voltage drop between input and output. The integrated switch feature simplifies system power sequencing compared to standard LDOs. Consider the 0.5 A current limit and thermal dissipation capabilities in the DPAK package for the target application's power budget.
Part Context
This part belongs to the LFxx family of very low drop regulators designed for applications demanding low noise and low power consumption. The LF33 variant specifically targets 3.3 V logic and analog circuit supplies. The DPAK packaging facilitates surface-mount assembly for compact designs.
Replacement Considerations
Direct substitutes include other LF33 variants such as LF33CDT-TR or LF33ABDT-TR, provided the pinout and electrical characteristics match the design requirements.
