L4931CD25-TR

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The L4931CD25-TR is a fixed-output low-dropout (LDO) linear voltage regulator manufactured by STMicroelectronics. It provides a stable 2.5V output with a maximum continuous current of 250mA. The device operates within an input voltage range up to 20V and features a typical dropout voltage of 0.4V at full load. Quiescent current is specified at 600µA in the active state and 50µA in shutdown mode. The unit is housed in an 8-SOIC surface-mount package, suitable for operation across a temperature range of -40°C to +125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Integrated TTL-compatible logic control for electronic shutdown to enable standby modes
• Requires only a 2.2 µF output capacitor for stability, reducing component count
• Includes internal protection against overcurrent conditions and thermal overload

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered portable electronic devices requiring low quiescent current
• Local voltage regulation in systems utilizing logic-controlled power management
• Low-noise power supply circuits for sensitive analog components

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging configuration. Confirm the 'C' designation corresponds to the 2% output voltage accuracy grade. Ensure compatibility with 8-SOIC footprint requirements during PCB layout. Check for RoHS compliance status as per current manufacturing standards.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 2.5V rail is required with minimal external filtering. The 250mA current capability suits moderate load applications. Consider the 8-SOIC package for space-constrained designs. Verify that the 0.4V dropout characteristic meets the minimum input-to-output differential requirements of the system.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the L4931 family of very low drop regulators from STMicroelectronics. The series offers multiple output voltage options and packages including SO-8, DPAK, and TO-92. The CD25 variant specifically denotes the 2.5V fixed output version with standard accuracy grades.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

L4931CDT25-TR: Alternative reel packaging option for the same electrical specifications.