L4941BV

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

The L4941BV is a three-terminal positive low-dropout (LDO) voltage regulator manufactured by STMicroelectronics, providing a fixed 5V output with a maximum current capability of 1A. It operates within an input voltage range of 6V to 16V and features a typical dropout voltage of 450mV at full load. The device includes internal protections such as thermal shutdown, short-circuit protection, and reverse polarity protection. It is designed for applications requiring efficient power management in battery-powered equipment to extend operational life.

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

• Very low dropout voltage enables efficient operation in battery-powered systems
• Integrated thermal shutdown and short-circuit protection ensures device safety
• Reverse polarity protection allows connection without polarity concerns
• Low quiescent current minimizes power consumption during operation

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

• Battery-powered consumer electronics
• Industrial control systems
• Distributed power supply architectures

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

Verify the specific suffix 'BV' against official STMicroelectronics documentation to confirm package type and tape/reel specifications. Ensure compatibility with TO-220 or DPAK mounting requirements depending on the exact variant. Cross-reference RoHS compliance status and lead-free certification if required for your manufacturing process. Confirm operating temperature range matches your environmental constraints.

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

Select this component when a fixed 5V output is required with high current capability up to 1A. Consider its low dropout characteristic for applications where input voltage is close to the output level. Evaluate thermal performance under maximum load conditions due to linear regulation nature. Verify that the input voltage does not exceed the 16V maximum rating.

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

The L4941 belongs to STMicroelectronics' family of very low drop 1A regulators. It is available in multiple packages including TO-220 and DPAK. The series is designed for industrial and consumer applications requiring reliable voltage regulation with minimal external components. It complements other LDOs in the portfolio offering different voltage options and current ratings.

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

Check for direct pin-compatible replacements within the L49xx series or equivalent LDOs from other manufacturers. Ensure replacement parts match the 5V output, 1A current rating, and similar dropout characteristics. Verify package compatibility if physical footprint is constrained.