LM79L15ACMX/NOPB Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Output Configuration:	Negative
Output Type:	Fixed
Number of Regulators:	1
Voltage - Input (Max):	-35V
Voltage - Output (Min/Fixed):	-15V
Voltage - Output (Max):	--
Voltage Dropout (Max):	--
Current - Output:	100mA
Current - Quiescent (Iq):	6mA
PSRR:	50dB (120Hz)
Control Features:	--
Protection Features:	Over Temperature, Short Circuit
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	LM79

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Introduction

The LM79L15ACMX/NOPB is a linear voltage regulator used for 3-terminal Positive voltages. This regulator is pin and electrical compatible with the commonly used 78LXX and 79LXX regulator families. The LM79L15ACMX/NOPB is a fixed voltage regulator with an internal current-limiting feature that improves the over current capability of the regulator and enhances its reliability.

Application

The LM79L15ACMX/NOPB regulator is suitable for a wide range of applications, especially where a low-current voltage reference is required. It is capable of supplying up to 1.5A of output current, with a wide range of output voltage options. The device is also suitable for use in ATX (Advanced Telecommunications X-Ray) systems and voltage regulators line. The LM79L15ACMX/NOPB can be used in computers and other electronic systems as well.

Features

The LM79L15ACMX/NOPB regulator has several features that range from the large amount of current it can handle to the low noise output characteristics. Some of the features of this device include:- Output voltage range from 2.85V to 12V- Internal current limit- Thermal protection- Output current up to 1.5A- Output noise less than 625μV- Operating temperature range: -40°C to 105°C- Short circuit output current limiting- High PSRR- Low quiescent current- Low dropout voltage

Working Principle

The LM79L15ACMX/NOPB is a three-terminal positive voltage regulator that operates by setting the output voltage to a reference voltage. This internal reference voltage is set by the voltage divider, which is connected to the pins 3 and 4. The voltage on the output pin is regulated to the reference voltage by the LM79L15ACMX/NOPB internal circuitry. The device works by sensing the output voltage and then adjusting the output current to keep the desired output voltage. The voltage at the output is determined by two resistors, a high-value resistor connected from the OUT pin to ground, and a lower value resistor connected from the OUT pin to the output of the regulator (ADJ). The voltage on the output is equal to the reference voltage minus the voltage drop across the lower value resistor.The internal current limit of the LM79L15ACMX/NOPB ensures that the device won\'t be damaged in the event of an overload. The current limit is proportional to the output voltage and is expressed as the maximum operating current for any given output voltage. The LM79L15ACMX/NOPB also has excellent thermal protection characteristics. The device inherent thermal shutdown helps protect the device from overheating.

Conclusion

The LM79L15ACMX/NOPB voltage regulator is a versatile device that can be used in many different applications. Its wide output voltage range, excellent current limiting characteristics, and low noise output make it an ideal choice for a variety of applications. It’s small size and low quiescent current operation make it suitable for applications that require minimal space and minimal power consumption.

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