LP2985A-18DBVT

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

The LP2985A-18DBVT is a fixed-output low-dropout linear regulator manufactured by Texas Instruments. It provides a stable positive output voltage of 1.8V with a maximum load current capability of 150mA. The device supports an input voltage range from 2.5V to 16V and utilizes a five-pin SOT-23 surface-mount package. Key electrical characteristics include a typical quiescent current of 71µA at zero load, a dropout voltage of approximately 280mV, and high power supply rejection ratios exceeding 70dB at 1kHz.

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

• Provides precise fixed output voltage regulation suitable for sensitive microcontroller and processor power rails
• Features ultra-low quiescent current consumption to maximize battery life in portable applications
• Incorporates internal soft-start and current limiting protection to manage inrush currents and prevent thermal overload

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

• Powering low-voltage microcontrollers and digital logic circuits
• Post-regulation stages following switching DC/DC converters to reduce noise
• Battery-operated consumer electronics requiring efficient power management
• Portable instrumentation and handheld devices

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

Verify the specific suffix 'DBVT' corresponds to the SOT-23-5 tape-and-reel packaging configuration. Confirm that the 'A' grade designation meets the required output accuracy specifications for your design. Ensure compatibility with RoHS directives if applicable to your manufacturing region. Check for any recent lifecycle status updates or obsolescence notices from the manufacturer before finalizing procurement plans.

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

Select this component when a fixed 1.8V rail is required with minimal external component count. It is appropriate for designs needing low noise performance without complex feedback networks. Consider the thermal dissipation capabilities within the small SOT-23 package under maximum load conditions. Verify that the input voltage remains within the specified operational range to maintain regulation.

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

This part belongs to the LP2985 family of low-dropout regulators designed for wide input voltage ranges. The LP2985A variant typically offers improved accuracy and lower quiescent current compared to standard versions. The family is widely used in industrial and commercial applications where space-constrained PCB layouts demand compact surface-mount solutions.

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

LP2985A-18DBVR serves as a reel-based alternative offering identical electrical specifications. LP2985AIM5-1.8/NOPB provides a different package option while maintaining similar performance metrics. Verify pinout compatibility and thermal characteristics when substituting with these alternatives.