LP3966ESX-ADJ/NOPB

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

The LP3966ESX-ADJ/NOPB is a low-dropout linear voltage regulator manufactured by Texas Instruments. It provides an adjustable output voltage ranging from 1.2 V to 5 V with a maximum continuous output current of 3 A. The device operates within an input voltage range up to 7 V and maintains a typical dropout voltage of 800 mV at full load. It features a low quiescent current of 15 uA and offers high power supply rejection ratio (PSRR) of 60 dB. The component is housed in a TO-263-5 surface-mount package and supports operation across an extended temperature range from -40°C to +125°C.

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

• Adjustable positive output voltage configuration allowing flexible system design
• High accuracy regulation with integrated overcurrent, thermal overload, and short-circuit protection
• Low quiescent current consumption for improved efficiency in battery-powered applications
• Surface-mount TO-263-5 package optimized for thermal performance and PCB space

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

• Portable electronic devices requiring efficient power management
• Battery-operated systems needing stable voltage regulation
• Embedded circuits with strict thermal and current constraints

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

Verify the complete part number including suffixes such as NOPB against official Texas Instruments documentation to ensure correct specifications and compliance status. Confirm RoHS and REACH adherence through manufacturer datasheets or product change notices. Cross-reference ordering information directly with authorized distributors to avoid counterfeit components. Ensure the specific package variant matches your PCB footprint requirements before finalizing procurement decisions.

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

Select this regulator when designing circuits that require high output current capability alongside low noise and precise voltage adjustment. Consider the TO-263-5 package for its thermal dissipation advantages in compact designs. Evaluate the input voltage headroom relative to the 800 mV dropout characteristic under varying load conditions. Ensure the application environment stays within the specified -40°C to +125°C operating temperature range for reliable performance.

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

This component belongs to the LP3966 family of low-dropout regulators designed for high-current applications. It serves as a successor or alternative to older National Semiconductor LDO designs now managed by Texas Instruments. The device integrates essential protection features typically found in industrial-grade power management ICs, making it suitable for robust consumer and industrial electronics where reliability and thermal stability are critical design parameters.

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

LP3966ES-ADJ is listed as a related part number in distributor databases.