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Product Detailed Parameters
- Description：IC REG LINEAR 3V 250MA 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)：5.5V
- Voltage - Output (Min/Fixed)：3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.2V @ 250mA
- Current - Output：250mA
- Current - Quiescent (Iq)：25 µA
- Current - Supply (Max)：425 µA
- PSRR：80dB ~ 60dB (100Hz ~ 100KHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature, Short Circuit, Soft Start
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- Grade：-
- Qualification：-
Download product information
Overview
The LDLN025M30R is a fixed-output linear low-dropout regulator from STMicroelectronics, providing a stable 3V output with a maximum current capacity of 250mA. It operates within an input voltage range of 1.5V to 5.5V and features a typical dropout voltage of 120mV at full load. The device exhibits ultra-low noise performance of 6.5µVRMS and high power supply rejection ratios of 80dB at 100Hz and 60dB at 100kHz. Quiescent current is minimized to 12µA at no-load, extending battery life in portable applications. It includes internal soft-start, overcurrent protection, thermal shutdown, and logic-controlled enable functionality.
Feature Summary
- Ultra-low output noise suitable for sensitive RF and analog loads
- High power supply rejection ratio for clean signal integrity
- Logic-controlled electronic shutdown for extended standby battery life
- Integrated safety protections including thermal and short-circuit limits
Applications
- Noise-sensitive loads such as precision ADCs and VCOs
- Mobile phones and tablets requiring compact power solutions
- Wireless LAN devices and IoT sensors
- Fitness monitors and medical sensors
Procurement Notes
Verify the specific suffix M30R corresponds to the required SOT-23-5 package and 3V fixed output variant. Confirm RoHS3 compliance and moisture sensitivity level requirements against your assembly process specifications. Ensure the ordering part number matches the exact manufacturer designation to avoid substitution errors during procurement.
Selection Notes
Select this component when designing for space-constrained portable electronics that demand minimal quiescent current and superior noise immunity. It is appropriate for applications where input voltages vary between 1.5V and 5.5V but require a precise 3V rail. Consider its small footprint and integrated protection features for robust system design without external protection components.
Part Context
This device belongs to the LDLN025 series of ultra-low noise LDO regulators designed for noise-sensitive applications. The series offers various output voltages and package options, including Flip-Chip4, DFN4, and SOT-23-5. The LDLN025M30R specifically denotes the 3V output version in the SOT-23-5 package, targeting mobile and wearable markets.
Replacement Considerations
Consult official STMicroelectronics documentation for qualified replacement part numbers within the LDLN025 family or other compatible LDO series. Verify pin compatibility and electrical parameters before substituting.
