MIC5159BM6-TR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Discontinued at Digi-Key
Type:	Positive Adjustable
Number of Outputs:	1
Current - Supply:	10mA
Voltage - Input:	1.65 V ~ 5.5 V
Operating Temperature:	-40°C ~ 125°C
Package / Case:	SOT-23-6
Supplier Device Package:	SOT-23-6
Base Part Number:	MIC5159

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MIC5159BM6-TR Application Field and Working Principle

The MIC5159BM6-TR is a switching voltage regulator controller produced by Micrel Semiconductor. It is part of the Company’s Power Management IC (PMIC) product line. This device is an advanced linear regulator controller. It is intended for use in applications such as multi-phase DC/DC converters, high-performance analog circuits, and designs for power conditioning in portable, telecom and automotive systems.The MIC5159BM6-TR’s linear regulator controller utilizes a pulse frequency modulation (PFM) architecture to provide high efficiency while still providing good line and load regulation. The PFM architecture allows the output voltage of the regulator controller to vary depending on the load current and the input voltage while still maintaining a constant output current.At the heart of the MIC5159BM6-TR’s linear regulator controller is an operational amplifier. This amplifier controls the output voltage of the device. When the load current or input voltage varies, the operational amplifier adjusts the output voltage accordingly. The operational amplifier is connected to an oscillator which generates a square wave signal. This signal is used to drive a P-channel Power MOSFET (MOSFET) which operates as the regulator’s switch.When the oscillator’s signal is high, the MOSFET is turned on, allowing current to flow from the input voltage to the output. The MOSFET is continuously switched on and off to maintain the output voltage. The times at which the MOSFET is switched on and off are adjusted based on feedback from the operational amplifier. This ensures that the output voltage of the regulator controller remains constant regardless of changes in load current or input voltage.The MIC5159BM6-TR’s linear regulator controller is designed to provide high efficiency and good line and load regulation. With its PFM architecture, the device is capable of operating with high efficiency even at light load conditions. Furthermore, its selectable operating frequency allows it to be optimized for specific system requirements.The MIC5159BM6-TR’s linear regulator controller also has a number of built-in features designed to minimize external component count and overall system cost. For example, the device has a fault detection system that monitors for over-current, over-temperature, and open loop conditions. In the event that a fault is detected, the fault detection system will alert the user and shut down the regulator.Additionally, the MIC5159BM6-TR’s regulator controller includes a power-down function. This feature allows the user to easily shut down the regulator in the event of a fault or when the device is not in use. This feature helps to reduce system power consumption and ensure that the regulator remains in a safe state during periods of inactivity.Overall, the MIC5159BM6-TR is a powerful and cost-effective linear regulator controller. With its high efficiency and built-in features, it is an ideal choice for multi-phase DC/DC converters, high-performance analog circuits, and other power conditioning applications.

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