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Product Detailed Parameters
- Description：IC REG LINEAR 5V 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)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.225V @ 50mA
- Current - Output：50mA
- Current - Quiescent (Iq)：150 µA
- Current - Supply (Max)：1.2 mA
- PSRR：45dB (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 LD2982AM50R is a positive fixed linear voltage regulator from STMicroelectronics, delivering a nominal output of 5V at up to 50mA. It features an ultra-low dropout voltage of 225mV at full load and a low quiescent current of 150µA. The device operates with an input voltage range up to 16V and includes internal thermal overload and short-circuit protection. Packaged in a compact SOT-23-5 surface-mount case, it supports operation across a temperature range of -40°C to +125°C.
Feature Summary
- Ultra-low dropout voltage capability for efficient power management
- Low quiescent current consumption suitable for battery-powered applications
- Integrated thermal overload and short-circuit protection circuits
Applications
- Portable consumer electronics requiring stable 5V logic supplies
- Battery-operated devices needing extended runtime through low standby current
- Embedded systems utilizing compact SOT-23-5 footprints
Procurement Notes
Verify the specific suffix 'R' indicates reel packaging when reviewing distributor listings. Confirm RoHS compliance status via the manufacturer's official documentation. Ensure the ordering part number matches the exact electrical specifications required for your circuit design before finalizing procurement.
Selection Notes
Select this component when a fixed 5V output is required with minimal voltage drop under 50mA loads. Consider its low quiescent current for energy-sensitive designs. Verify that the SOT-23-5 package fits the board layout constraints and that the 16V maximum input rating exceeds the system's supply voltage.
Part Context
This regulator belongs to the LD2982 series of low-dropout linear regulators. It shares architectural similarities with other members like the LD2980 and LDK320 but is optimized for 50mA output currents. The series emphasizes low noise and high power supply rejection ratios for sensitive analog and digital circuits.
Replacement Considerations
Check for pin-compatible alternatives within the same LD298x family or equivalent LDOs from other manufacturers. Ensure replacement parts match the 5V output, 50mA current rating, and SOT-23-5 package dimensions. Verify thermal performance characteristics align with the original design requirements.
