L4931CPT120-TR

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

The L4931CPT120-TR is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 12V 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. It includes internal thermal overload and short-circuit current limiting protections. The component is housed in an SO-8 surface-mount package and is rated for operation across a temperature range of -40°C to +125°C.

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

• Logic-controlled electronic shutdown function for power management
• Very low dropout voltage capability for efficient battery-powered systems
• Internal protection against overcurrent and thermal overload

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

• Battery-powered portable electronics
• Low noise analog circuit power supplies
• Local voltage regulation in embedded systems

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

Verify the specific suffix 'TR' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status as manufacturing processes evolve. Check for obsolescence notices from STMicroelectronics, as older LDO families may be phased out. Ensure the SO-8 footprint matches the target PCB design constraints before finalizing procurement.

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

Select this component when a fixed 12V rail is required with minimal quiescent current draw. The SO-8 package suits space-constrained surface-mount designs. Verify that the input-to-output voltage differential remains sufficient to maintain regulation under worst-case load conditions. Consider the thermal dissipation capabilities of the SO-8 package for high ambient temperatures.

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

This part belongs to the L4931 series of very low drop voltage regulators. The series offers various output voltages and packages including TO-220, DPAK, PPAK, and TO-92. The L4931CPT120-TR specifically denotes the 12V fixed output variant in the SO-8 reel format, designed for low-power applications requiring high efficiency and compact sizing.

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

Direct substitutes include other L4931 variants with different output voltages or packages, such as L4931CD50 or L4931CV120. Cross-reference pinouts and thermal characteristics carefully when substituting between package types like SO-8 and DPAK.