onsemi

LM2931CDR2

LM2931CDR2 Description

The LM2931CDR2 from onsemi is a low-dropout (LDO) linear voltage regulator designed for precision voltage regulation in a compact 8-SOIC surface-mount package. This adjustable-output regulator supports an input voltage range up to 26V and delivers a stable output voltage adjustable from 2.7V to 29.5V with a maximum output current of 100mA. Its low dropout voltage of 0.6V @ 100mA ensures efficient operation even with small input-output differentials, making it ideal for battery-powered and energy-sensitive applications.

LM2931CDR2 Features

• Wide Input Range (Up to 26V): Suitable for automotive and industrial systems with fluctuating supply voltages.
• Adjustable Output (2.7V–29.5V): Offers flexibility for diverse circuit requirements.
• Low Quiescent Current (1mA): Minimizes power loss in standby or idle modes.
• Protection Features: Includes over-current and over-temperature safeguards for enhanced reliability.
• Low Dropout (0.6V @ 100mA): Optimizes efficiency in low-voltage differential scenarios.
• Surface-Mount Package (8-SOIC): Compact footprint for space-constrained PCB designs.
• REACH Unaffected: Compliant with environmental regulations.

LM2931CDR2 Applications

The LM2931CDR2 excels in applications requiring stable, low-noise voltage regulation with minimal power dissipation:

• Automotive Electronics: Power management for infotainment, sensors, and control modules.
• Industrial Systems: Voltage stabilization for PLCs, instrumentation, and embedded controllers.
• Battery-Powered Devices: Extends runtime in portable equipment like medical devices and IoT sensors.
• Embedded Systems: Reliable voltage supply for microcontrollers and low-power peripherals.

Conclusion of LM2931CDR2

The LM2931CDR2 stands out as a robust, adjustable LDO regulator with low dropout, wide input range, and integrated protection features. While marked as obsolete, its performance remains competitive for legacy designs or systems requiring stable, low-quiescent-current regulation. Its compact 8-SOIC package and flexible output make it a versatile choice for automotive, industrial, and portable applications where efficiency and reliability are critical.