A comprehensive range of industry-standard regulators
ST's high-performance low-dropout (LDO) linear regulators offer a combination of benefits to meet the stringent performance requirements of the industrial and automotive markets. ST offers an ever-expanding selection of high-performance LDO regulators for various environments, including automotive, industrial, and consumer electronics. These regulators feature low quiescent current, low noise, high PSRR (power supply ripple rejection), and come in compact packages to support the development of new solutions for various environments, including automotive, industrial, and consumer electronics.
Use cases and application examples
Discover our offer
STMicroelectronics is at the forefront of innovation, offering a comprehensive range of low-dropout regulators (LDOs) designed to meet the stringent requirements of modern applications. Our portfolio includes the LD56020, LD57100, ST730/ST732, LDQ40/LDL40/LDH40, LD39100/LD49100, and LDLN050. Each LDO is engineered to deliver exceptional performance across various environments, including automotive, industrial, and consumer electronics.




Industrial and automotive grades
LDQ40/LDL40/LDH40
Very low IQ 2 µA, 250/200 mA, 40 V input.

Industrial and automotive grades
LD39100/LD49100
Low quiescent current low dropout LDO, 1 A.

Key features and benefits
- High accuracy: for post regulation down to 1 V.
- Very low consumption: enhanced lifetime of battery-powered devices and reduced power dissipation.
- High PSRR: keep the voltage constant under different load currents.
- Ultralow noise: signal integrity in low noise applications.
- Small packages: space saving in the application board.
How to select the right high-performance low-dropout (LDO) linear regulator?


