L4941BDT-TR

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

The L4941BDT-TR is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a positive 5V output with a maximum continuous current of 1A. The device operates within an input voltage range of 6V to 16V and maintains stability using only a 2.2µF output capacitor. Key electrical parameters include a typical dropout voltage of 250mV at full load, rising to a maximum of 700mV. Quiescent current is specified at 20mA. The unit features line regulation and load regulation of 20mV each, with a voltage accuracy of 4%. It is housed in a surface-mount TO-252-3 (DPAK) package and supports an operating temperature range from -40°C to +150°C.

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

• Integrated thermal shutdown and short-circuit protection for enhanced reliability under fault conditions.
• Requires minimal external components, needing only a single 2.2µF capacitor for stable operation.
• Designed for battery-powered applications due to very low input-to-output voltage drop characteristics.

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

• Battery-powered equipment requiring efficient power management.
• Distributed power supply systems with on-card regulation.
• Industrial and consumer electronic devices utilizing 5V logic levels.

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

Verify the specific suffix and tape-and-reel configuration against the manufacturer's latest datasheet before procurement. Ensure that the ordering part number matches the required package type and output tolerance. Confirm that the supplier provides original manufacturer documentation to validate authenticity. Check for any recent product change notices regarding pinout or electrical specifications.

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

Select this component when a fixed 5V rail is required with up to 1A load capacity in a compact surface-mount form factor. It is suitable for designs where input voltage remains above 6V. Consider the thermal performance in the DPAK package if high ambient temperatures are expected. Verify that the 4% output voltage tolerance meets the downstream circuit requirements.

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

This device belongs to the L4941 series of three-terminal positive regulators. The series is characterized by its ability to operate with minimal input-to-output differential voltage. It is designed to replace standard 78xx-type regulators in applications where space and efficiency are critical constraints.

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

Direct replacements may include other 5V 1A LDOs in TO-252 packages from various manufacturers. Verify pinout compatibility and thermal resistance values. Ensure that substitute parts meet the same input voltage and current specifications.