LP38856S-1.2

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LP38856S-1.2 Voltage Regulator:

The LP38856S-1.2 is a low-dropout linear voltage regulator module from Texas Instruments, which is classified as part of PMIC (Power Management ICs) - Voltage Regulators - Linear. It offers an intelligent design that suits different types of applications needing a low dropout, high current linear regulator.

LP38856S-1.2 contains two integrated transistors and one resistor to provide a high current output with low dropout voltage. In addition, it features adjustable voltage range of 1.2 V to 5.5 V. This voltage regulator also provides a current limit of 1.5 A with a thermal protection circuit.

Applications:

The LP38856S-1.2 voltage regulator is ideal for applications in the industrial, communication, and automotive industries. Some of its applications include ultra-low power systems, main power supplies, and power supply bypass uses. This fractional microcontroller can also be used in USB port outputs, Motor Control, and USB Cooling Fans.

The LP38856S-1.2 can also be used in solar power systems, smart meters, and medical sensors. It provides an adjustable voltage range of 1.2V-5.5V, low quiescent current (I_Q = 50 uA typical, with further reduced operation during sleep mode), low dropout voltage, and fast transient response. Additionally, it has a maximum output current of 1.5A and thermal shutdown protection for improved safety.

Working Principle:

The LP38856S-1.2 voltage regulator is designed to drop residual voltage from an output to a regulated voltage. This voltage regulator operates by routing current supplied by a higher voltage into ground, while the output requires only a small dropout rail to maintain a dissipative load. The LP38856S-1.2 uses a simple design consisting of two transistors and one resistor to provide a high current output with a low dropout voltage. By adjusting the value of the resistor, the regulator can achieve a target output voltage.

The LP38856S-1.2 voltage regulator is equipped with a thermal protection circuit that detects temperature extremes and shuts down the output in extreme cases. When the temperature of the regulator reaches a predefined value, the thermal protection circuit shuts off the regulator until the temperature drops. This helps prevent damage to connected components.

In addition, this voltage regulator module can operate in either standalone or synchronous buck boost configurations to suit different types of applications. In synchronous configurations, the device works with an external power MOSFET and synchronous rectifier to generate an output depending on the selected mode. It also provides over-voltage protection and reverse-battery protection to prevent damage in the event of an unsafe power input.

The LP38856S-1.2 is a versatile voltage regulator module that can be used in multiple applications, offering protection against temperature extremes, over-voltage, and reverse-battery conditions. It provides high power output with low dropout voltage and adjustable voltage range. By leveraging its low quiescent current and fast transient response, this linear regulator module can be used in a variety of industrial, automotive, and communication applications.

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