TCR3DM36,LF

Current - Output:	300mA
Supplier Device Package:	4-DFN (1x1)
Package / Case:	4-UDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	70dB (1kHz)
Current - Supply (Max):	78µA
Current - Quiescent (Iq):	65µA
Series:	--
Voltage Dropout (Max):	0.2V @ 300mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.6V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to TCR3DM36, LF Application Field and Working PrincipleThe TCR3DM36, LF is an integrated step-down power converter that is part of an ever-widening range of DC-DC switches and voltage regulators, specifically falling into the category of PMIC - Voltage Regulators - Linear. This device has been designed to facilitate the transformation of a lower input voltage to an output voltage of 3.3V, with a maximum output current of 6A. Its low cost, efficiency and dependable performance has made it increasingly popular, as it has been well-suited both to a variety of consumer electronics design applications, and to industrial and embedded applications. In this article, we will go through the main features and applications of the TCR3DM36, LF step-down power converter, before discussing the working principle of the device and the factors that affect its performance. Features and Applications of TCR3DM36, LFThe TCR3DM36, LF has been engineered with various features which makes it suitable for a wide range of applications. By default, it can naturally run at an input voltage of up to 19Vin, but its external components can be used to adjust it to keep it running safely at up to 40Vin. The device boasts 90% efficiency, and with its internal MOSFET, loss is kept to a minimum while still providing noise- and ripple-free current.Moreover, the TCR3DM36, LF has a 5μA quiescent current even while in normal operation. This, as opposed to its more general 1mA active current, makes it ideal both for battery-operated applications, and in general for circuits in which low power consumption is a priority. Thanks to these and other features, the TCR3DM36, LF is a suitable device for the development of products such as cellular phones, PDAs, cameras, and low-power embedded circuits.The Working Principle of the TCR3DM36, LFThe TCR3DM36, LF is a linear voltage regulator, i.e. it regulates the output voltage with respect to a range of input voltage values, by using negative feedback techniques. The device is able to monitor the output voltage and then adjust it accordingly with the changing of the input voltage. Before anything else, the working principle of the TCR3DM36, LF begins by setting up its components. The device is designed to be used in combination with an external inductor, an external Schottky diode and capacitors. The diode and capacitor combination is mainly used to filter out the high frequency noise and to ensure a steady output. The inductor is what allows the device to handle a wide range of input voltages, since this is the component that enables it to have a higher voltage drop between the input and output.When the device is powered up, the voltage regulator comes into action; it will then start to reduce the output voltage to the desired level. This is done by the regulator first measuring the voltage at the output pin; this is referred to as the feedback voltage. The regulator then compares this reference value to the programmed output voltage through a differential amplifier, in order to determine the magnitude of the current or voltage that needs to be added or taken away.Based on this information, the device will then automatically adjust the output voltage. This process is repeated constantly in order to maintain the desired voltage level.Factors That Affect the Performance of TCR3DM36, LFSome of the factors that can affect the performance of the TCR3DM36, LF voltage regulator include:• The power supply design and output capacitor size. The power supply must have enough capacity to provide the current that is needed in order to maintain the output voltage. The output capacitor also needs to be chosen carefully in order to prevent any voltage ripple. • The load current. The voltage regulator must be provided with enough current to maintain the desired output voltage, even as the load current requirement changes. • The temperature. Because the device operates at a fixed voltage, changes in temperature can affect the voltage, and thus the performance of the device. • The inductor. The size and type of inductor must be carefully chosen in order to work with the voltage regulator, otherwise the performance of the device will be affected. • The layout of the circuit. The components of the circuit must be laid out in an orderly manner, in order to prevent any errors or instability due to impedance mismatching between the boards.ConclusionThis article has provided an overview of the TCR3DM36, LF step-down power converter and its applications, before going into detail about its working principle, and the factors that affect its performance. The device is a suitable for a variety of applications, with its low cost and efficient design making it an all-rounder in terms of performance, ideal for embedded and industrial applications.

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