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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V 250MA 6-DFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1V @ 250mA
- Current - Output：250mA
- Current - Quiescent (Iq)：5 µA
- Current - Supply (Max)：500 µA
- PSRR：55dB (1kHz)
- Control Features：Current Limit, Enable
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：6-WDFN Exposed Pad
- Supplier Device Package：6-DFN (2x2)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LDQ40PU25RY is a high-precision, adjustable low-dropout linear voltage regulator manufactured by STMicroelectronics. It delivers a guaranteed output current of 250 mA with an input voltage range spanning from 3.3 V to 40 V. The device features a typical quiescent current of 2 µA and supports output voltages between 1.2 V and 12 V. It operates within a junction temperature range of -40 °C to +150 °C and holds AEC-Q100 Grade 1 qualification for automotive reliability.
Feature Summary
- Logic-controlled electronic shutdown enables ultra-low power consumption in standby modes.
- Integrated protection mechanisms include internal current limiting, short-circuit protection, and thermal shutdown.
- Output active discharge function ensures rapid voltage decay when the device is disabled.
Applications
- Low-power battery-operated consumer electronics
- Automotive systems requiring AEC-Q100 Grade 1 compliance
- Industrial applications utilizing DFN 2x2 6L packaging
Procurement Notes
Verify that the specific suffix 'PU25RY' corresponds to the intended fixed 2.5 V output variant rather than the adjustable version, as the series includes both configurations. Confirm the package designation matches the required footprint for your PCB layout. Ensure compatibility with the specified operating temperature range for your target environment before finalizing procurement.
Selection Notes
Select this component when a wide input voltage range up to 40 V is required alongside high accuracy. It is suitable for designs needing minimal external components while maintaining stability with small ceramic capacitors. Consider the DFN 2x2 6L package for space-constrained layouts where automotive-grade reliability is mandatory.
Part Context
This part belongs to the LDQ40 series of low-dropout regulators designed for high precision and efficiency. The series offers multiple package options including SOT23-5L and DFN variants to optimize board space. It targets applications demanding stable regulation under varying load conditions with minimal power loss.
Replacement Considerations
LDQ40PURY serves as the adjustable voltage variant within the same series, sharing identical electrical characteristics and packaging but differing in output configuration.
