LP2951CD-3.0R2G

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

The onsemi LP2951CD-3.0R2G is a micropower low dropout voltage regulator in an SOIC-8 package, providing a fixed 3.0 V output with 1% tolerance at 25°C. It delivers up to 100 mA of output current while maintaining a quiescent bias current of only 75 µA. The device features internal current and thermal limiting protection, ensuring robust operation under fault conditions. Designed for battery-powered applications, it maintains regulation with an extremely low input-to-output voltage differential.

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

• Integrated error output flag signals out-of-regulation conditions or serves as a power-on reset indicator
• Logic level shutdown input allows the regulator output to be turned off or on via external control
• Internal current and thermal limiting protection safeguards against overload and overheating

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

• Battery powered computer systems requiring extended operational life
• Consumer electronic equipment utilizing low power linear regulation
• Industrial equipment needing stable voltage supply under varying load conditions

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

Verify the specific suffix R2G confirms tape and reel packaging when sourcing from distributors. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the SOIC-8 footprint matches the target PCB design constraints. Check for any automotive qualification requirements if the application demands AEC-Q100 standards, as this specific part number may differ from NCV prefixed variants.

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

Select this component when a fixed 3.0 V rail is required with minimal quiescent current consumption. The LP2951 variant is preferred over LP2950 when additional diagnostic capabilities like error flagging or shutdown control are necessary. Ensure the input voltage remains within the 30 V maximum rating and that the dropout voltage characteristics align with the minimum available supply voltage during peak load currents.

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

This device belongs to the LP2951 family of micropower voltage regulators designed by onsemi. It shares core architecture with the LP2950 but adds dedicated pins for error output and shutdown functionality. The SOIC-8 package provides surface mount convenience compared to through-hole options. The 'C' designation indicates standard 1% output voltage precision, distinguishing it from the higher precision 'AC' series.

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

LP2951CD-3.3R2G offers identical pinout and features with a 3.3 V fixed output. LP2951CD-5.0R2G provides a 5.0 V fixed output option within the same package. For adjustable voltage applications, LP2951CDR2G allows programming between 1.25 V and 29 V using external resistors.