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LDL40PUR

LDL40PUR

STMicroelectronics
Linear Regulator Controller IC Output
Active2,927 in stock
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Overview

The LDL40PUR is a high-voltage, ultra-low quiescent current linear regulator designed for automotive and industrial applications. It operates with an input voltage up to 40V while consuming only 2uA of quiescent current, making it ideal for always-on battery-powered systems.

Why Choose This Part

This regulator offers an exceptional balance of high input voltage (up to 40V) and ultra-low quiescent current (2uA typical), significantly extending battery life. Its AEC-Q100 Grade 1 qualification and thermal/current protection ensure high reliability in harsh operating temperatures from -40C to 150C.

Applications

Automotive Always-On Systems
Provides power to keyless entry receivers or alarm systems that must remain active while the vehicle is off.
Industrial Sensors
Regulates power for 24V industrial loops where low power consumption and high voltage tolerance are required.
EV Powertrain Monitoring
Suitable for low-power monitoring circuits in electric vehicle battery management and powertrain environments.

Getting Started

When designing with the LDL40PUR, ensure the output capacitor has a low ESR for stability, typically 1uF or greater. For the adjustable version (LDL40PURY), use a resistor divider on the ADJ pin to set the output voltage between 1.2V and 12V.

Also Consider

TPS7A66-Q1 TITexas Instruments - An automotive-grade LDO with an even wider input range up to 40V and integrated power-on-reset functionality.