L149H

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

The L149H is a general-purpose power booster manufactured by STMicroelectronics, housed in a Pentawatt package. It features a quasi-complementary Darlington output stage with an associated biasing system. The device supports an input voltage range up to 20V and draws a quiescent current of 400μA. It includes an enable control function for power management. Classified as a linear driver, it is designed for motor controller applications.

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

• Quasi-complementary Darlington output stage
• Integrated biasing system
• Enable control function

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

• Motor controllers
• Linear driver circuits
• General purpose power boosting

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

Verify component status carefully as the L149H is listed as obsolete or no longer manufactured. Confirm availability through authorized distributors or secondary markets. Check for potential tariff implications if shipping to specific regions like the United States. Ensure replacement strategies are evaluated due to end-of-life status.

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

Select this component only if legacy compatibility with the Pentawatt package and 20V input limit is required. Consider the 400μA quiescent current for low-power standby requirements. Evaluate the enable pin functionality for system power sequencing needs. Assess alternative modern drivers if new designs allow for updated packaging or efficiency standards.

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

The L149H belongs to STMicroelectronics' line of motor controllers and drivers. It serves as a power booster within the broader category of linear regulators and motion control ICs. The Pentawatt package provides thermal performance suitable for moderate power dissipation in industrial or consumer electronics applications requiring robust drive capabilities.

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

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, direct replacements should be identified through official STMicroelectronics obsolescence notices or equivalent functional alternatives from other manufacturers.