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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V 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)：2.5V
- 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：-
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Overview
The LDLN025M25R is a fixed-output linear regulator from the LDLN025 series, manufactured by STMicroelectronics. It provides a stable 2.5 V output with a maximum current capacity of 250 mA. The device operates within an input voltage range of 1.5 V to 5.5 V and features a typical dropout voltage of 120 mV at full load. Key electrical specifications include a quiescent current of 12 µA at no-load, power supply rejection ratios of 80 dB at 100 Hz and 60 dB at 100 kHz, and an ultra-low output noise of 6.5 µV RMS. It supports operation across a temperature range of -40 °C to +125 °C.
Feature Summary
- Ultra-low output noise suitable for sensitive analog loads
- Logic-controlled electronic shutdown with minimal standby current
- Integrated internal soft-start and thermal protection circuits
- Stable operation using only ceramic capacitors
Applications
- Powering precision analog-to-digital converters (ADCs)
- Supplying voltage-controlled oscillators (VCOs) in mobile devices
- Power management for wireless LAN components
- Noise-sensitive sensor interfaces in wearable technology
Procurement Notes
Verify the specific suffix 'M25R' corresponds to the required 2.5 V fixed output and SOT-23-5 package configuration. Confirm RoHS compliance status and moisture sensitivity level requirements against project specifications. Ensure ordering documentation matches the manufacturer's part number exactly to avoid variant mismatches.
Selection Notes
Select this component when low noise performance is critical for signal integrity in compact designs. The low quiescent current makes it suitable for battery-powered applications requiring extended standby times. Verify that the input voltage remains within the specified 1.5 V to 5.5 V range to ensure proper regulation and dropout characteristics.
Part Context
This part belongs to the LDLN025 family of low-dropout regulators designed for space-constrained portable electronics. The series emphasizes high power supply rejection and ultra-low noise to support RF and audio-sensitive circuits. The M25R designation indicates a specific output voltage and packaging option within this broader product line.
Replacement Considerations
Consult official substitution lists for compatible LDOs with matching 2.5 V output and 250 mA capability. Verify pin compatibility and thermal performance before replacing. Ensure alternative parts meet the same noise and PSRR requirements for sensitive load applications.
