LDL212DR

Overview

The LDL212DR is a low-dropout linear regulator IC from STMicroelectronics, part of the LDL212 series. It provides a maximum output current of 1.2 A with an input voltage range from 2.5 V to 18 V. The device features a typical dropout voltage of 350 mV at full load and includes high power supply rejection ratio (PSRR) performance. It incorporates enable logic control for shutdown mode, reducing total current consumption. Internal protections include current limit, safe operating area (SOA), and thermal limitation. The component operates within a temperature range of -40 °C to 125 °C.

Feature Summary

• Provides 1.2 A maximum output current with high PSRR suitable for SMPS direct regulation
• Includes enable function for shutdown mode to minimize current consumption
• Features internal thermal, current, and power limitation protections

Applications

• Direct regulation in switch-mode power supplies (SMPS)
• Secondary linear regulation in DC-DC converters
• Embedded systems requiring stable voltage rails

Procurement Notes

Verify the specific package type associated with the 'DR' suffix against official STMicroelectronics documentation, as package designations can vary. Confirm availability status, as some variants may be discontinued or subject to change. Ensure the selected version matches the required output voltage and thermal requirements for the target application environment.

Selection Notes

Select this component when a 1.2 A output current is required with an input voltage up to 18 V. Consider the typical 350 mV dropout voltage for efficiency calculations. The high PSRR makes it suitable for noise-sensitive applications following switching regulators. Verify that the DFN6 or SO-8 package fits the PCB layout constraints.

Part Context

The LDL212 belongs to a family of low-dropout linear regulators designed for general-purpose power management. It offers fixed and adjustable output voltage options ranging from 1.2 V to 12 V. The series supports various packages including DFN6 and SO-8 batwing micropackages, catering to space-constrained designs.

Replacement Considerations

Check for direct pin-compatible replacements within the LDL212 series with different output voltages or packages. Verify if alternative LDOs from other manufacturers meet the 1.2 A current and 18 V input specifications without requiring circuit redesign.