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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 200MA 6-DFN
- Series：ECOPACK®
- 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)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1V @ 200mA
- Current - Output：200mA
- Current - Quiescent (Iq)：5 µA
- Current - Supply (Max)：500 µA
- PSRR：70dB (1kHz)
- Control Features：Current Limit, Enable, Power Good
- 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 LDL40PU33RY is a 200 mA low dropout linear regulator from STMicroelectronics, designed for direct connection to automotive batteries or generic industrial power sources. It features an extended input voltage range up to 40 V, supporting load dump transients typical in automotive systems. The device provides a fixed 3.3 V output with high accuracy and ultra-low quiescent current at light loads to extend battery life in always-on standby applications. It is stabilized by small ceramic capacitors on both input and output terminals.
Feature Summary
- AEC-Q100 Grade 1 qualified for automotive reliability
- Logic-controlled electronic shutdown with total current consumption lower than 0.3 µA
- Integrated thermal protection and internal current limit
- Output active discharge function for safe state management
Applications
- Automotive infotainment systems
- Electric vehicle powertrain control units
- Vehicle instrument clusters and dashboards
- Advanced Driver Assistance Systems (ADAS)
- Industrial always-on standby equipment
Procurement Notes
Verify the specific suffix 'PU33RY' against the official STMicroelectronics datasheet to confirm the fixed 3.3 V output voltage, DFN6 package type, and AEC-Q100 Grade 1 qualification status. Ensure compatibility with the target application's input voltage profile and thermal requirements before procurement.
Selection Notes
Select this component when designing for automotive environments requiring robustness against high-voltage transients like load dump. It is suitable for space-constrained PCB designs due to its small footprint DFN package with wettable flanks, which facilitates automated optical inspection. Choose this regulator for applications prioritizing minimal ground current during standby modes.
Part Context
The LDL40 belongs to a family of high-accuracy voltage regulators including the LDH40 and LDQ40. While the LDQ40 offers 250 mA output and the LDL40 provides 200 mA, all share similar automotive-grade qualifications and packaging technologies. This series targets engineers optimizing power management systems for information entertainment and electric vehicle dynamics.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify cross-references through official manufacturer channels.
