LP875701-Q1

The LP875701-Q1 is a high-efficiency, low-dropout (LDO) voltage regulator designed for automotive applications, manufactured by Texas Instruments. It delivers a stable output voltage of 3.3 V with a maximum output current of 2 A, making it suitable for powering sensitive electronic systems in vehicles. The device operates from an input voltage range of 4.5 V to 6.0 V, ensuring compatibility with standard automotive battery systems that typically experience voltage fluctuations during engine start-up and load changes. This regulator features integrated protection mechanisms including over-current protection (OCP), thermal shutdown, and under-voltage lockout (UVLO). These safeguards enhance system reliability and prevent damage under abnormal operating conditions. Additionally, the LP875701-Q1 includes a fast transient response, minimizing output voltage deviations when load currents change rapidly—a critical requirement for modern automotive electronics such as infotainment systems, ADAS components, and microcontrollers. Designed for robust performance in harsh environments, the LP875701-Q1 meets AEC-Q100 Grade 1 qualification standards, ensuring long-term reliability across temperature ranges from -40°C to +125°C. Its compact 4-pin WSON package reduces board space requirements while maintaining excellent thermal performance through efficient heat dissipation. The device also supports a low quiescent current of just 1.2 mA, contributing to improved power efficiency in always-on vehicle systems. In terms of functionality, the LP875701-Q1 provides a simple enable pin for power management, allowing seamless integration into power sequencing schemes. It also offers a programmable soft-start feature that limits inrush current during startup, reducing stress on the power supply and connected circuits. The internal compensation ensures stability across various load and capacitor configurations without requiring external components. Common applications include automotive infotainment modules, telematics units, sensors, and control units where reliable, clean power delivery is essential. Its ability to maintain precise regulation despite input voltage variations and high load transients makes it ideal for use in advanced driver-assistance systems (ADAS), where signal integrity and power stability directly impact safety and performance.