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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 50MA SOT23-5
- 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)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.225V @ 50mA
- Current - Output：50mA
- Current - Quiescent (Iq)：150 µA
- Current - Supply (Max)：1.2 mA
- PSRR：63dB (1kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°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 LD2980CM18TR is an ultra-low dropout voltage regulator from STMicroelectronics, designed for low noise and low power applications in battery-powered systems. It features a fixed 1.8 V output voltage with a typical quiescent current of 80 μA in on mode and less than 1 μA in sleep mode when the inhibit pin is pulled low. The device guarantees up to 50 mA output current and operates within a temperature range of -40 to 125 °C. It utilizes a SOT23-5L package and is stable with low ESR ceramic capacitors.
Feature Summary
- Ultra-low dropout voltage performance suitable for efficient power management
- Logic-controlled electronic shutdown function for standby power reduction
- Stable operation with low ESR ceramic output capacitors
- Low noise voltage output for sensitive analog circuits
Applications
- Battery powered systems
- Audio systems
- Instrumentation
- Industrial control boards
Procurement Notes
Verify the specific suffix 'CM18TR' against official STMicroelectronics documentation to confirm the exact output voltage, tolerance class, and packaging details. Ensure compatibility with low ESR ceramic capacitors as specified in the datasheet. Confirm that the logic control interface meets TTL compatibility requirements for your system design.
Selection Notes
Select this component for applications requiring minimal quiescent current and stable regulation with ceramic capacitors. The 1.8 V fixed output makes it suitable for digital logic supplies. Consider the SOT23-5L package size constraints and thermal dissipation capabilities for the expected load current.
Part Context
The LD2980 series comprises ultra-low dropout regulators optimized for low noise and low power consumption. This family supports various fixed output voltages and includes features like electronic shutdown. The CM18TR variant specifically denotes the 1.8 V output version in the SOT23-5L package.
Replacement Considerations
Check for other LD2980 variants with different output voltages or packages if the 1.8 V specification does not match requirements. Verify functional compatibility with alternative LDOs offering similar quiescent current and dropout characteristics.
