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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 150MA SOT-666
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- 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)：0.1V @ 100mA
- Current - Output：150mA
- Current - Quiescent (Iq)：50 µA
- Current - Supply (Max)：70 µA
- PSRR：65dB ~ 62dB (1kHz ~ 10kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：SOT-563, SOT-666
- Supplier Device Package：SOT-666
- Grade：-
- Qualification：-
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Overview
The LD39015XG33R is a fixed-output linear voltage regulator manufactured by STMicroelectronics, providing a stable 3.3V output with a maximum current capacity of 150mA. It operates within an input voltage range of 1.5V to 5.5V and features a typical dropout voltage of 80mV at 100mA load. The device incorporates ultra-low quiescent current characteristics, consuming approximately 50µA during operation and less than 1µA in shutdown mode when enabled via logic control. It includes integrated protection against overcurrent and thermal overload, ensuring reliability across a wide operating temperature range from -40°C to +125°C.
Feature Summary
- Ultra-low dropout voltage capability for efficient power management in battery-powered systems
- Logic-controlled electronic shutdown function enabling deep sleep modes with minimal current consumption
- Integrated short-circuit constant current limiting and thermal protection mechanisms
Applications
- Mobile phones and portable communication devices
- Personal digital assistants (PDAs)
- Cordless phones and similar low-power battery-operated systems
Procurement Notes
Verify the specific suffix 'XG' against official STMicroelectronics documentation to confirm package type and tape-and-reel specifications. Confirm availability status as distribution channels may list obsolete or end-of-life variants differently. Ensure compatibility with ceramic output capacitors as specified in the datasheet for stability.
Selection Notes
Select this component for applications requiring precise 3.3V regulation with minimal noise and high efficiency under light loads. Consider the SOT-666 package constraints for PCB layout. Verify that the input voltage remains within the 1.5V to 5.5V range to maintain proper LDO operation and avoid excessive power dissipation.
Part Context
This part belongs to the LD39015 series of low-quiescent-current, low-noise voltage regulators designed for portable electronics. The series offers various fixed output voltages and packages, including SOT-23-5 and SOT-666, catering to space-constrained designs. It shares core architectural features with other members like the LD39015M33R but differs in packaging and specific manufacturing revisions.
Replacement Considerations
Direct substitutes include other LD39015 variants with compatible output voltages and packages, such as LD39015M33R for SOT-23-5 implementations. Verify pinout compatibility and thermal performance before swapping between different package types within the same family.
