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Product Detailed Parameters
- Description：IC REG LINEAR 3V 50MA SOT23-5
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：3V
- 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 LD2982BM30R is a fixed-output low-dropout (LDO) voltage regulator manufactured by STMicroelectronics. It provides a stable 3 V output with a maximum load current of 150 mA. The device features ultra-low quiescent current, typically 80 μA at no load in active mode and less than 1 μA in shutdown mode when the inhibit pin is pulled low. It includes logic-controlled electronic shutdown via a TTL-compatible pin. Designed for stability with low ESR ceramic capacitors, it offers internal thermal and current limiting protection. The component operates within an input voltage range of 2.5 V to 16 V and supports a junction temperature range from -40 °C to +125 °C.
Feature Summary
- Ultra-low quiescent current consumption suitable for battery-powered systems
- Logic-controlled electronic shutdown function for power management
- Stable operation with low ESR ceramic output capacitors
- Integrated thermal and current limiting protection
Applications
- Battery-powered instrumentation
- Low noise audio systems
- Industrial control boards
- Switched-mode power supply (SMPS) post-regulation
Procurement Notes
Verify the specific suffix 'BM30R' against official STMicroelectronics documentation to confirm the exact output voltage tolerance and package marking. Ensure compatibility with low ESR ceramic capacitors as specified in the datasheet. Confirm that the required 150 mA output current aligns with your system's peak load requirements without exceeding thermal limits.
Selection Notes
Select this component when a fixed 3 V rail is required with minimal standby power consumption. The LD2982BM30R is appropriate for designs utilizing ceramic output capacitors due to its guaranteed stability. Consider the 150 mA current limit and the 2.5 V minimum input voltage when designing the power stage. The shutdown feature allows for additional power savings in standby modes.
Part Context
This part belongs to the LD298x series of ultra-low dropout regulators from STMicroelectronics. These devices are engineered for applications demanding low noise and high efficiency in portable electronics. The series shares common architectural features such as CMOS technology and robust protection mechanisms, distinguishing them from older linear regulator families.
Replacement Considerations
Consult official STMicroelectronics substitution guides for verified equivalents. Cross-reference pinouts and electrical characteristics carefully if considering alternative manufacturers.
