Texas Instruments

LP38851T-ADJ  

Linear & Switching Voltage Regulators

LP38851T-ADJ Description

The LP38851T-ADJ is a linear voltage regulator designed by Texas Instruments, offering adjustable output voltage capabilities within a range of 0.8V to 1.8V. This regulator is capable of delivering up to 800mA of output current, making it suitable for a variety of applications requiring precise voltage control. The device operates with an input voltage range up to 5.5V and features a low dropout voltage of 0.2V at 800mA, ensuring efficient power delivery even at low input-to-output differentials.

LP38851T-ADJ Features

• Adjustable Output Voltage: The LP38851T-ADJ provides an adjustable output voltage range from 0.8V to 1.8V, allowing for flexibility in various electronic designs.
• High Current Capability: With a maximum output current of 800mA, this regulator is well-suited for applications requiring significant power delivery.
• Low Dropout Voltage: The maximum dropout voltage of 0.2V at 800mA ensures high efficiency, especially in low input-to-output voltage scenarios.
• Control Features: The regulator includes enable and soft start features, providing enhanced control over the power-up sequence and ensuring a smooth transition to the desired output voltage.
• Protection Features: Comprehensive protection mechanisms such as over current, over temperature, short circuit, and under voltage lockout (UVLO) safeguard the device and connected components.
• Low Quiescent Current: The quiescent current is only 300 µA, minimizing power consumption during standby or low-load conditions.
• High PSRR: The power supply rejection ratio (PSRR) ranges from 72dB to 61dB across frequencies from 120Hz to 1kHz, ensuring stable output voltage under varying input conditions.
• Through Hole Mounting: The through hole mounting type facilitates easy integration into printed circuit boards (PCBs) and ensures robust mechanical stability.
• Moisture Sensitivity Level: With an MSL rating of 1 (unlimited), the device is suitable for use in a wide range of environmental conditions without additional moisture protection.

LP38851T-ADJ Applications

The LP38851T-ADJ is ideal for applications that require a stable and adjustable power supply with high efficiency and robust protection features. Specific use cases include:

• Consumer Electronics: Powering devices such as smartphones, tablets, and other portable electronics that demand precise voltage regulation and low power consumption.
• Industrial Equipment: Providing reliable power to control systems, sensors, and actuators in industrial environments where stability and protection are critical.
• Medical Devices: Ensuring stable power supply for medical equipment where precision and reliability are paramount.
• Telecommunications: Supplying power to various components in communication systems, including base stations and routers, where high efficiency and low dropout voltage are essential.

Conclusion of LP38851T-ADJ

The LP38851T-ADJ from Texas Instruments is a versatile linear voltage regulator that offers adjustable output voltage, high current capability, and a low dropout voltage. Its comprehensive protection features and low quiescent current make it an ideal choice for applications requiring stable and efficient power delivery. Despite being marked as obsolete, the LP38851T-ADJ remains a reliable option for designers seeking a robust linear regulator with adjustable output capabilities.

LP38851T-ADJ Documents

Download datasheets and manufacturer documentation for LP38851T-ADJ

Datasheets :

LP38851      

HTML Datasheet :

LP38851