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Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 1A 6-DFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：4.6V
- Voltage Dropout (Max)：0.4V @ 1A
- Current - Output：1A
- Current - Quiescent (Iq)：50 µA
- Current - Supply (Max)：300 µA
- PSRR：70dB ~ 65dB (1kHz ~ 10kHz)
- Control Features：Enable, Power Good
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：6-VDFN Exposed Pad
- Supplier Device Package：6-DFN (3x3)
- Grade：-
- Qualification：-
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Overview
The LD39100PUR is a positive adjustable low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a maximum output current of 1 A with an input voltage range from 1.5 V to 5.5 V. The device features an ultra-low dropout voltage of 200 mV typical at full load and maintains stability with ceramic capacitors. It includes logic-controlled electronic shutdown, reducing quiescent current to less than 1 µA in off mode. The regulator offers internal short-circuit constant current limiting and thermal protection. It is housed in a 6-DFN (3x3 mm) package with exposed pad.
Feature Summary
- Ultra-low dropout voltage for efficient power management
- Logic-controlled electronic shutdown for minimal standby consumption
- Internal short-circuit and thermal protection mechanisms
- Stable operation with ceramic input and output capacitors
Applications
- Low-power battery-powered applications
- Portable consumer electronics
- Embedded systems requiring stable linear regulation
Procurement Notes
Verify the specific suffix PUR against the manufacturer's official datasheet to confirm the exact package type and tape-and-reel specifications. Ensure compatibility with moisture sensitivity levels and reflow soldering profiles defined in the product documentation before procurement.
Selection Notes
Select this component when a 1 A output current is required within a 1.5 V to 5.5 V input range. It is suitable for designs prioritizing low noise and low quiescent current without external bypass capacitors. Confirm that the adjustable output voltage range meets the system requirements.
Part Context
This part belongs to the LD39100 series of low-quiescent-current, low-noise voltage regulators. The series is designed for applications demanding high efficiency and compact footprints. The DFN6 package allows for space-constrained PCB layouts while maintaining thermal performance through the exposed pad.
Replacement Considerations
Check for direct substitutes within the same family or comparable LDOs with similar pinouts and electrical characteristics. Verify that any replacement supports the same input voltage range and output current capabilities.
