LM285BYM/NOPB

Noise - 0.1Hz to 10Hz:	--
Base Part Number:	LM285
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Current - Cathode:	45µA
Current - Supply:	--
Voltage - Input:	--
Noise - 10Hz to 10kHz:	50µVrms
Series:	--
Temperature Coefficient:	50ppm/°C
Tolerance:	±1%
Current - Output:	20mA
Voltage - Output (Max):	5.3V
Voltage - Output (Min/Fixed):	1.24V
Output Type:	Adjustable
Reference Type:	Shunt
Part Status:	Active
Packaging:	Tube

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Introduction

The LM285BYM/NOPB is a 3-terminal voltage reference device manufactured by Texas Instruments. It is one of the most popular voltage references in the industry, and is suitable for use in applications such as instrumentation, digital signal processing (DSP), PC motherboard, and consumer electronics. This voltage reference is part of the PMIC (Power Management IC) family and falls into the Voltage Reference category.

Features

The LM285BYM/NOPB features an operating temperature range from -40°C to +125°C, an output voltage of 2.5 V ± 0.5%, and a maximum output current of 25 mA. It has internal compensation and corrosion protection, and the output is short-circuit protected. Its low quiescent current of 1.7 mA and low voltage dropout of 50 mV make it ideal for use in battery operated systems. The device is also capable of operating in a wide variety of input voltages and current levels, making it suitable for a variety of applications.

Application Field

The LM285BYM/NOPB can be used in a variety of applications, particularly those requiring precision voltage references. It is suitable for use in instrumentation, digital signal processing (DSP), PC motherboard, and consumer electronics, as well as in automotive systems, LED lighting, and telecom switches. Additionally, thanks to its low quiescent current and low voltage dropout, it is particularly well-suited for battery-operated systems.

Working Principle

The LM285BYM/NOPB works by comparing the output voltage to an internal reference voltage, then adjusting the output voltage as needed to maintain a constant reference voltage. The output voltage is monitored and controlled by a pair of transistors that are connected to both the reference voltage and the output voltage. When the output voltage deviates from the reference voltage, one of the transistors is activated and acts to restore the output voltage to the reference value.

Conclusion

In conclusion, the LM285BYM/NOPB device is a 3-terminal voltage reference that is suitable for use in a wide variety of applications. It features an operating temperature range from -40°C to +125°C, an output voltage of 2.5 V ± 0.5%, and a maximum output current of 25 mA. Additionally, its low quiescent current of 1.7 mA and low voltage dropout of 50 mV make it ideal for use in battery-operated systems. Its precision voltage reference makes it suitable for use in instrumentation, digital signal processing (DSP), PC motherboard, and consumer electronics, as well as in automotive systems, LED lighting, and telecom switches. Finally, it works by comparing the output voltage to an internal reference voltage, then adjusting the output voltage as needed to maintain a constant reference voltage.

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