Texas Instruments

LP38691SD-3.3/NOPB  

Linear & Switching Voltage Regulators

LP38691SD-3.3/NOPB Description

The LP38691SD-3.3/NOPB is a high-performance linear voltage regulator designed by Texas Instruments, offering a fixed output voltage of 3.3V and capable of delivering up to 500mA of current. This device is part of the Linear & Switching Voltage Regulators category and is optimized for automotive applications. It features a maximum input voltage of 10V and a dropout voltage of 0.55V at 500mA, ensuring efficient operation even under varying input conditions. The regulator is housed in a 6-lead WSON package, which is suitable for surface-mount applications and provides a compact footprint for space-constrained designs.

LP38691SD-3.3/NOPB Features

• Fixed Output Voltage: The LP38691SD-3.3/NOPB provides a stable 3.3V output voltage, making it ideal for applications requiring a precise and consistent power supply.
• High Efficiency: With a dropout voltage of only 0.55V at 500mA, this regulator maintains high efficiency even at lower input voltages, reducing power loss and heat generation.
• Low Quiescent Current: The device features a low quiescent current of 55 µA, which is crucial for battery-powered applications where minimizing power consumption is essential.
• Over-Temperature Protection: Built-in over-temperature protection ensures the regulator operates within safe limits, enhancing reliability and longevity.
• High Power Supply Rejection Ratio (PSRR): The regulator boasts a PSRR of 55dB at 120Hz, effectively filtering out noise from the input supply and providing a clean output voltage.
• Automotive Grade: Certified for automotive applications, the LP38691SD-3.3/NOPB meets the stringent requirements of the automotive industry, including robustness and reliability.
• Compliance: The device is REACH unaffected and RoHS3 compliant, adhering to environmental and safety standards.
• Moisture Sensitivity Level (MSL): With an MSL of 1 (Unlimited), the regulator is suitable for various manufacturing environments without the risk of moisture-related damage.

LP38691SD-3.3/NOPB Applications

The LP38691SD-3.3/NOPB is well-suited for a variety of applications, particularly in the automotive sector, where reliability and efficiency are paramount. Specific use cases include:

• Automotive Electronics: Ideal for powering ECUs (Electronic Control Units), infotainment systems, and other automotive electronic modules that require a stable 3.3V supply.
• Battery-Powered Devices: Suitable for portable electronic devices where low quiescent current is critical for extending battery life.
• Industrial Control Systems: Provides a reliable power supply for sensors, actuators, and other control components in industrial environments.
• Telecommunications: Can be used in communication modules and base stations where a stable and efficient power supply is necessary.

Conclusion of LP38691SD-3.3/NOPB

The LP38691SD-3.3/NOPB stands out as a robust and efficient linear voltage regulator, offering a balance of performance, reliability, and compliance with industry standards. Its low dropout voltage, high PSRR, and low quiescent current make it an excellent choice for applications where power efficiency and noise reduction are critical. The automotive-grade certification ensures it meets the demanding requirements of automotive applications, while its compact 6-lead WSON package makes it suitable for space-constrained designs. Overall, the LP38691SD-3.3/NOPB is a versatile and reliable solution for a wide range of electronic systems.

LP38691SD-3.3/NOPB Documents

Download datasheets and manufacturer documentation for LP38691SD-3.3/NOPB

Images :

Mechanical Outline Drawing       Function Diagram      

PCN :

Qualification of UTAC as Alternate Assembly/Test site for select QFN Devices (PDF)       Product Change Notification (PDF)       Product Change Notification 2024-06-28 (PDF)      

Product Catalogs :

Current Sense Amplifiers (Rev. D)       Low Dropout Regulators Quick Reference Guide (Rev. P)      

SPICE Models :

LP38691_3P3 Unencrypted PSpice Transient Model       LP38691_3P3 PSpice Transient Model