LM9071S/NOPB

Current - Output:	250mA
Base Part Number:	LM9071
Supplier Device Package:	DDPAK/TO-263-5
Package / Case:	TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Temperature, Over Voltage, Reverse Polarity, Short Circuit
Control Features:	--
PSRR:	60dB (120Hz)
Current - Supply (Max):	50mA
Current - Quiescent (Iq):	4mA
Series:	--
Voltage Dropout (Max):	0.8V @ 250mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	26V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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Introduction

The LM9071S/NOPB can be classified under the category of PMIC - Voltage Regulators - Linear. It is a low dropout (LDO) linear voltage regulator designed to deliver 1A max. current and has an output voltage regulation range of 1.23V to 20.0V. It is commonly used in Point-Of-Load (POL) converters; as well as other applications such as Microprocessor/Digital Signal Processor (MPU/DSP) core and I/O voltage suppliers, media processors), LCD digital panels, power partitions in FPGA systems, and memory processors.

Application Field

The LM9071S/NOPB is designed specifically for low-voltage, low-power systems where efficiency, low-noise, and long operating life are important. It is an excellent choice for embedded systems, portable devices, and battery-operated systems. Due to its robust design, it can support a wide input voltage range of 2V to 18V. This makes it suitable for applications where there are wide input voltage fluctuations while delivering stabilized output voltage with high accuracy. Its wide output voltage range of 1.23 to 20V allows it to be used in a variety of applications including Ultrabooks, tablets, digital cameras, and other chemical-mechanical equipment.

Features

The features of LM9071S/NOPB are wide input voltage range of 2V to 18V, low dropout voltage of 0.2V, low output voltage noise, programmable soft start and thermal shutdown. The low dropout voltage of 0.2V makes it ideal for applications where the input voltage is only slightly higher than the output voltage. This helps to conserve power, reduce heat, and reduce the number of components required in the system.The low output voltage noise of 10mV maximizes system performance by keeping system noise to a minimum.The programmable soft start and thermal shutdown help to protect the device during power up or power down and save power during normal operation.

Advantages

The main advantages of LM9071S/NOPB are its wide input voltage range, low dropout voltage, low output voltage noise, programmable soft start, thermal shutdown and accuracy. It is designed to provide high accuracy in voltage regulation, which means that it has a low temperature coefficient and very low output voltage ripple. This improves system reliability and helps to protect system components from damage.It is a high performance LDO, with a high efficient output ripple rejection rate of 70dB, which provides effective noise filtering and helps to ensure stable operation.The wide input voltage range of 2V to 18V allows the device to be used in a wide range of applications and makes it ideal for use in energy-critical applications such as portable devices.

Working Principle

The LM9071S/NOPB works on the principle of linear regulators where the output voltage is maintained constant by comparing the actual output voltage with the reference voltage. The reference voltage is externally set and is usually in the range of 1.23V to 20.0V. When there is difference between the output voltage and the reference voltage, the control block inside the LM9071S/NOPB will adjust the current flowing through the pass transistor to maintain the desired output voltage. This current is proportional to the error voltage (difference between the output voltage and the reference voltage).The power switch in the LM9071S/NOPB is automatically turned off when the voltage difference between the input and output is less than 200mV, this helps to conserve power. The output voltage can be adjusted using a optional external resistor divider and can be monitored using the integrated voltage sensing circuit.

Conclusion

The LM9071S/NOPB is an excellent choice for low-voltage, low-power applications where efficiency and long operating life are important. Due to its wide input voltage range, low dropout voltage, low noise output, high current handling capability, programmable soft start, and thermal shutdown feature, the LM9071S/NOPB is well-suited for use in multiple applications. Its low-voltage linear regulation principle works by adjusting the current flowing through the pass transistor to maintain the desired output voltage.

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