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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 500MA TO220
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.7V @ 200mA (Typ)
- Current - Output：500mA
- Current - Quiescent (Iq)：1 mA
- Current - Supply (Max)：12 mA
- PSRR：82dB ~ 60dB (120Hz ~ 10kHz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Grade：-
- Qualification：-
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Overview
The LF18CV is a fixed-output linear voltage regulator from the LFxx series, manufactured by STMicroelectronics. It provides a stable 1.8V output with a maximum current capacity of 500mA. The device features a very low dropout voltage and includes an inhibit control function for power management. It is housed in a TO-220AB through-hole package with three pins. The component operates within a temperature range up to 125°C and meets AEC-Q100 automotive standards.
Feature Summary
- Fixed 1.8V output voltage regulation
- Integrated inhibit control functionality
- Very low dropout voltage operation
- Automotive qualified (AEC-Q100)
Applications
- Automotive electronic systems requiring 1.8V logic supply
- Battery-powered devices needing efficient linear regulation
- General-purpose embedded circuit power conditioning
Procurement Notes
Verify the specific suffix or variant against official STMicroelectronics documentation, as the base part number may have multiple configurations. Confirm that the TO-220AB package matches your thermal and mechanical requirements. Check for obsolescence status, as some sources indicate this specific revision may be discontinued. Ensure the inhibit pin is properly configured if active control is required in your design.
Selection Notes
Select this component when a fixed 1.8V rail is needed with moderate current demands up to 500mA. The TO-220AB package suits applications where through-hole mounting and heat dissipation are prioritized over board space. Consider the inhibit feature if system-level power sequencing is necessary. Verify input voltage stays within the 16V absolute maximum rating to ensure reliability.
Part Context
This part belongs to the LFxx family of very low drop voltage regulators. These components are designed for applications requiring stable power supplies with minimal voltage loss between input and output. The family typically offers robust performance across varying load conditions and temperatures, making them suitable for industrial and automotive environments.
Replacement Considerations
Check STMicroelectronics datasheets for direct replacements within the LFxx series. Verify pin compatibility and electrical specifications before substituting. Note that availability may vary due to obsolescence status.
