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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 200MA 4-DFN
- 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)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.35V @ 200mA
- Current - Output：200mA
- Current - Quiescent (Iq)：40 µA
- Current - Supply (Max)：-
- PSRR：80dB ~ 55dB (1kHz ~ 100kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature, Soft Start
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：4-XDFN Exposed Pad
- Supplier Device Package：4-DFN (1x1)
- Grade：-
- Qualification：-
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Overview
The LD39020ADTPU33R is a high-accuracy linear regulator IC from STMicroelectronics, providing a fixed 3.3V output with a maximum current of 200mA. It operates within an input voltage range of 1.5V to 5.5V and features a typical dropout voltage of 200mV at full load. The device utilizes a DFN4 1x1 package and includes logic-controlled shutdown with quiescent current below 0.1µA. It offers high PSRR (80dB at 1kHz) and ±0.5% output voltage tolerance.
Feature Summary
- Ultra-low dropout voltage for efficient power management in battery-operated applications
- Logic-controlled electronic shutdown enabling minimal standby current consumption
- Internal soft-start circuitry combined with constant current and thermal protection
Applications
- Low power battery-operated portable devices
- Handheld equipment requiring space-saving surface mount solutions
- Systems utilizing ceramic output capacitors for stability
Procurement Notes
Verify the specific suffix 'A' indicates the high-accuracy version with ±0.5% tolerance during procurement. Confirm the DFN4 1x1 package dimensions match the design footprint. Ensure the supply chain source provides official datasheets to validate the exact electrical characteristics and operating temperature range before integration.
Selection Notes
Select this component when precise voltage regulation is critical due to its ±0.5% tolerance. It is suitable for designs prioritizing low static current and small physical footprint. Consider the 200mA output limit and input voltage range constraints. Verify compatibility with ceramic output capacitors as required for stability.
Part Context
This part belongs to the LD39020 series of very low quiescent current linear regulators. It shares core architecture with standard versions but differs in output voltage accuracy specifications. The series is designed for applications demanding high efficiency and compact size, utilizing advanced CMOS technology for performance optimization.
Replacement Considerations
Standard LD39020DTPU33R variants offer identical electrical performance except for reduced output voltage tolerance (±2.0%). Verify if the higher precision of the 'A' version is necessary for the specific application requirements before substituting.
