LM385M3-1.2/NOPB

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Voltage reference is a key element in many electrical and electronic circuits. The voltage reference stabilizes the output voltage of a power supply, provides a reference point for measurements like input offset voltage, or as a reference for controlling frequency and even power factor. The LM385M3-1.2/NOPB voltage reference is a precision voltage reference suitable for a wide range of applications.

Description

The LM385M3-1.2/NOPB voltage reference is part of Texas Instruments’ family of low dropout voltage references. It’s composed of an on-chip bandgap reference and an op amp to provide a stable 1.2 V output over a wide temperature range. It offers a fast settling time and low drift over temperature. The powerful bandgap circuit provides robust stability even in the presence of power supply transients. The LM385M3-1.2/NOPB is offered in two different packages: the 8-pin SOIC and the 8-pin N-SOIC.

Features

• 1.2 V bandgap voltage reference
• Low dropout voltage reference
• Available in 8-pin SOIC or 8-pin N-SOIC packages
• Fast settling time and low drift over temperature
• Robust stability in noisy environments
• Thermal stability of 0.1 mV/°C typ.
• Lead-free and Green Compliant

Applications

• Vco monitoring
• Low voltage power supplies
• Voltage monitoring/sensing circuits
• Vref for A/D converters
• Voltage/Current regulation
• Overvoltage/Undervoltage protection

Working Principle

The LM385M3-1.2/NOPB voltage reference is a three-terminal device which operates from a single supply. It provides a 1.2 V reference voltage, independent of the operating temperature and power supply variations. The LM385M3-1.2/NOPB is composed of an on-chip bandgap reference and an opamp to provide a stable 1.2 V output over a wide temperature range. The bandgap circuit is optimized for a low dropout voltage which minimizes power consumption even at high temperatures.

The LM385M3-1.2/NOPB features a fast settling time and low drift over temperature. The output is buffered by an opamp which provides robust stability even in the presence of power supply transients. The device is available in a 8-pin SOIC package or in an 8-pin N-SOIC package.

Conclusion

The LM385M3-1.2/NOPB voltage reference is a precision voltage reference suitable for a wide range of applications. It provides a 1.2 V output reference voltage, independent of the operating temperature and power supply variations. It features a fast settling time and low drift over temperature. The device is available in two different packages – 8-pin SOIC and 8-pin N-SOIC. It is a low dropout voltage reference and is suitable for low voltage power supplies, voltage monitoring and sensing circuits, voltage/current regulation, and overvoltage/undervoltage protection.

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