L4931CD27-TRY

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

The L4931CD27-TRY is a positive fixed-output low dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 2.7V output with a maximum load current of 250mA. The device features a very low dropout voltage of 0.4V and operates within an input voltage range of 2V to 20V. Quiescent current is typically 600µA in ON mode and 50µA in OFF mode. It includes internal current limiting and thermal shutdown protection, ensuring reliable operation across a temperature range of -40°C to +125°C.

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

• Very low dropout voltage of 0.4V for efficient power management
• Logic-controlled electronic shutdown function for standby mode applications
• Internal current limit and thermal overload protection mechanisms
• Requires only a 2.2 µF capacitor for stability

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

• Battery-powered portable systems requiring low quiescent current
• Local regulators in embedded systems with TTL-compatible shutdown control
• Low noise power supply circuits for sensitive analog components

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

Verify the specific suffix 'TRY' against the official datasheet to confirm package type (SO-8) and reel specifications. Ensure compatibility with existing PCB footprint and thermal design requirements. Confirm RoHS compliance status for the specific manufacturing batch. Cross-reference the part number with the manufacturer's latest documentation to avoid obsolete variants.

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

Select this component when a fixed 2.7V output is required with minimal voltage drop. The SO-8 surface mount package suits space-constrained designs. Consider the 250mA current capability and 20V maximum input rating. The inhibit pin allows for system-level power management. Verify that the 2.2µF output capacitor requirement fits the bill of materials.

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

The L4931 series comprises very low drop voltage regulators available in multiple packages including SO-8, DPAK, and TO-92. Variants offer different fixed output voltages such as 3.3V, 3.5V, and 5V. The family is designed for low power applications, featuring low quiescent current and logic-controlled shutdown capabilities suitable for battery-operated devices.

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

Direct substitutes include other L4931 variants with different output voltages if the voltage level can be adjusted or if a different fixed voltage is acceptable. Check pinout compatibility for SO-8 packages before substitution. Generic LDOs may require external compensation capacitors unlike the L4931's 2.2µF requirement.