NCV2951CDR2

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

The NCV2951CDR2 is a micropower linear voltage regulator in an SOIC-8 package. It provides a maximum output current of 100 mA with a low quiescent bias current of 75 µA. The device supports fixed outputs of 3.0 V, 3.3 V, and 5.0 V, or adjustable operation from 1.25 V to 29 V. It operates within an input voltage range up to 30 V and maintains regulation with a dropout voltage as low as 50 mV at 100 µA. The component includes internal current limiting and thermal shutdown protection.

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

• Features an error output pin that signals when the regulated voltage falls out of tolerance.
• Includes a logic-level shutdown input for controlling regulator operation.
• Supports programmable output voltages via external resistors or fixed internal taps.

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

• Microprocessor power-on reset circuits
• Battery-powered computer equipment
• Consumer industrial equipment requiring extended battery life

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

Verify the part number suffix 'G' indicates RoHS compliance and Pb-free construction. Confirm the 'NCV' prefix denotes automotive qualification and unique site control requirements. Ensure the ordering code matches the specific output voltage option required for the design.

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

Select this variant for applications requiring an error flag and shutdown capability. The LP2950 lacks these features. Verify stability requirements based on load current; higher currents may require larger output capacitors. Check thermal resistance limits against expected power dissipation in the SOIC-8 package.

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

This component belongs to the LP2950/LP2951/NCV2951 family of low dropout regulators. The NCV2951 series specifically targets automotive and high-reliability markets. It shares core performance characteristics with the standard LP2951 but adheres to stricter manufacturing controls.

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

LP2951CDR2G

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

How does the error output function?

The error comparator switches to a positive logic low when the output voltage drops approximately 5% below its nominal value, signaling an out-of-regulation condition.

What is the purpose of the shutdown input?

The shutdown input allows a logic level signal to turn the regulator output off, reducing power consumption during standby modes.