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Product Detailed Parameters
- Description：IC REG LINEAR POS ADJ 1.5A 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)：6V
- Voltage - Output (Min/Fixed)：1.22V
- Voltage - Output (Max)：5V
- Voltage Dropout (Max)：0.4V @ 1.5A
- Current - Output：1.5A
- Current - Quiescent (Iq)：2.5 mA
- Current - Supply (Max)：-
- PSRR：65dB ~ 55dB (120Hz ~ 1kHz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：6-VDFN Exposed Pad
- Supplier Device Package：6-DFN (3x3)
- Grade：-
- Qualification：-
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Overview
The LD39150PU-R is a low-dropout linear voltage regulator manufactured by STMicroelectronics, housed in a surface-mount DFN-6 package. It features an adjustable output voltage range from 1.22 V to 5 V and supports a maximum output current of 1.5 A. The device operates with a positive polarity and maintains a typical dropout voltage of 200 mV. It functions within a junction temperature range of -40 °C to +125 °C and draws a static current of 1 mA.
Feature Summary
- Adjustable output voltage capability spanning 1.22 V to 5 V
- High output current capacity up to 1.5 A
- Low quiescent current consumption for efficiency
- Integrated thermal overload and overcurrent protection
Applications
- Battery-powered portable electronic devices
- Embedded systems requiring stable regulated power rails
- Industrial control circuits operating in wide temperature ranges
Procurement Notes
Verify the specific datasheet revision and ordering suffix when sourcing components. Confirm that the DFN-6 package matches the target PCB footprint and thermal requirements. Ensure the adjustable output configuration aligns with the external resistor network design intended for the application voltage setting.
Selection Notes
Select this component when an adjustable LDO with high current drive is required in a compact surface-mount form factor. The wide input voltage range and low dropout characteristics make it suitable for applications where battery discharge curves vary significantly. Consider the thermal dissipation capabilities of the DFN-6 package under maximum load conditions.
Part Context
This part belongs to the LD39150 series of ultra-low drop BICMOS voltage regulators. The series includes fixed-output variants such as the LD39150PU33R, which provides a constant 3.3 V output. The PU-R designation specifically indicates the adjustable version in the DFN-6 package, offering flexibility in circuit design compared to fixed-voltage counterparts.
Replacement Considerations
The LD39150PU33R is listed as a substitute option within the same product family, though it provides a fixed 3.3 V output rather than an adjustable range.
