L4931ABPT80TR

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

The L4931ABPT80TR is a positive fixed linear voltage regulator from STMicroelectronics, providing an 8V output with a maximum current of 250mA. It features a very low dropout voltage of 0.4V and low quiescent current (600µA ON, 50µA OFF). The device includes logic-controlled shutdown, internal current and thermal limits, and requires only a 2.2µF capacitor for stability. It operates within a temperature range of -40°C to 125°C and offers high supply voltage rejection.

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

• Logic-controlled electronic shutdown function compatible with TTL levels
• Very low dropout voltage enabling efficient battery-powered operation
• Internal protection against overcurrent and thermal overload
• Stabilized with minimal external capacitance requirements

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

• Battery-powered systems requiring low power consumption
• Local regulation in embedded boards with standby modes
• Low noise power supply applications
• Automotive microprocessor control units

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

Verify the specific suffix 'ABPT80TR' to confirm the 8V output voltage and PPAK package type. Ensure compatibility with the required 250mA load current and operating temperature range. Confirm RoHS compliance status if mandated by project specifications. Cross-reference the manufacturer part number with official STMicroelectronics documentation to avoid confusion with similar L4931 variants.

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

Select this component when an 8V fixed output is required with low dropout characteristics. It is suitable for designs needing integrated shutdown control to reduce standby power. Consider the PPAK package for surface-mount assembly. Verify that the 250mA output current meets the system's peak demand while maintaining thermal performance within the specified junction temperature limits.

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

This part belongs to the L4931 family of very low drop voltage regulators with inhibit functions. The family offers various output voltages and packages, including SO-8, DPAK, and TO-92. The L4931 series is designed for low noise and low power applications, featuring high supply voltage rejection and robust protection mechanisms common across the product line.

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-TR (5V) or L4931ABDT50-TR (5V, DPAK), provided the voltage requirement is adjusted. Ensure any replacement maintains the 250mA current capability and shutdown functionality.