LM9073SX

Current - Output:	700mA, 100mA
Base Part Number:	LM9073
Supplier Device Package:	TO-263-11
Package / Case:	TO-263-12 (11 Leads + Tab)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Temperature, Over Voltage, Short Circuit
Control Features:	Enable, Watchdog (RSTO)
PSRR:	40dB (20kHz)
Current - Supply (Max):	10mA
Current - Quiescent (Iq):	100µA
Series:	--
Voltage Dropout (Max):	1V @ 700mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	27V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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LM9073SX application field and working principle

LM9073SX, also known as Low Dropout (LDO) voltage regulator, is a voltage regulator integrated circuit (IC) that helps control the output voltage of a circuit. It\'s part of the PMIC (Power Management IC) family offering adjustable and fixed output voltage, low quiescent current, high output current, good line and load regulation, and fast response time. It is a common used regulator in many applications such as memory, mobile phone, and other electronic equipments.In this article, we\'ll take a look at the LM9073SX application field and working principle.

Application Field

The LM9073SX voltage regulator can be used in a variety of applications. It\'s ideal for use in mobile phones, laptops, and other portable electronic devices since it provides superior performance and ensures a stable output voltage under a variety of operating conditions.Moreover, the LM9073SX is also used in memory bridges and memory modules, LCD displays, and USB charging circuits. It is suitable for use in battery-operated equipment, as it offers high reliability and low power consumption when the battery voltage fluctuates.

Working Principle

The LM9073SX operates as a low dropout (LDO) regulator. It takes an unregulated, higher voltage at the input and produces a steady voltage at the output. The regulator is designed to prevent current from flowing in the reverse direction and protect the circuit from overload. Basically, the regulator works by using a control element to control the flow of current in order to maintain the voltage output of a circuit. It only allows current to flow if the input is higher than the output, and in that case, it reduces the current. The amount of current reduction depends on how much the input voltage is higher than the output voltage.The LM9073SX uses an integrated field-effect transistor (FET) to accomplish this task. The FET is controlled by a dedicated on board amplifier, which adjusts the amount of current passing through the FET, based on the desired regulation point. Once the output voltage is which equal to the programmed voltage, the amplifier will stop the FET from passing current and the output remains stable.

Conclusion

The LM9073SX is a low dropout voltage regulator integrated circuit (IC) that provides adjustable and fixed output voltage, low quiescent current, high output current, good line and load regulation, and fast response time. It is widely used in a variety of application fields including mobile phones, laptops, memory bridges and memory modules, LCD displays, and USB charging circuits. It works on a low dropout (LDO) principle and uses an integrated FET and amplifier to maintain the output voltage.

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