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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 500MA PPAK
- 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：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：-
- Qualification：-
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Overview
The LF18ABPT is a very low drop regulator from the LFXX series, providing a fixed 1.8 V output with a maximum output current of 0.5 A. It features a low dropout voltage of 0.45 V and low quiescent current, making it suitable for low-noise, low-power applications in battery-powered systems. The input voltage range spans from -0.5 V to 40 V, utilizing an LDO topology for DC to DC conversion.
Feature Summary
- Very low dropout voltage enables efficient operation in low-voltage environments
- Low quiescent current supports extended battery life in portable devices
- Wide input voltage range accommodates various power supply conditions
Applications
- Low voltage bulb blinker circuits
- Battery powered systems requiring low noise
- Low power application designs
Procurement Notes
Verify the specific package type and tape-and-reel configuration against the manufacturer's official datasheet before procurement. Confirm that the 1.8 V output voltage aligns precisely with the target circuit requirements. Ensure compatibility with the specified input voltage range of up to 40 V. Check for any specific handling or storage instructions provided in the component documentation.
Selection Notes
Select this component when a stable 1.8 V rail is required with minimal voltage drop across the regulator. Its low quiescent current makes it ideal for energy-sensitive designs. Consider the 0.5 A output current capability to ensure it meets the load demands. The wide input range offers flexibility in system architecture design without needing additional pre-regulation stages.
Part Context
This device belongs to the LFXX family of regulators, designed for high efficiency in low-dropout scenarios. The series offers multiple output voltages, catering to diverse digital and analog logic levels. The LF18ABPT specifically targets applications where maintaining regulation at low input-to-output differentials is critical for system performance and power conservation.
Replacement Considerations
Check for other LFXX series variants with compatible output voltages if 1.8 V is adjustable. Verify pin-out compatibility with alternative LDO regulators offering similar 0.5 A current ratings. Ensure replacement parts maintain the same low dropout characteristics and input voltage specifications.
