LM2655MTCX-ADJ/NOPB

Voltage - Output (Min/Fixed):	1.238V
Base Part Number:	LM2655
Supplier Device Package:	16-TSSOP
Package / Case:	16-TSSOP (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	300kHz
Current - Output:	2.5A
Voltage - Output (Max):	13V
Series:	--
Voltage - Input (Max):	14V
Voltage - Input (Min):	4V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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## Introduction The LM2655MTCX-ADJ/NOPB is a MicroPower Switching Regulator, a high efficiency step-up (boost), flybuck and inverting converter. This chip is used in battery-powered products, such as cell phones, portable PCs, digital cameras, PDAs, and electronic toys. It operates on an input voltage range of 4.5V to 38V, and produces a maximum output current of 2.6A. In addition, it includes a power-saving diode, a current-limit circuit, a low-battery detector, a voltage comparator, and a short-circuit protection circuit.## Application Field The LM2655MTCX-ADJ/NOPB is designed for use in an array of applications, such as those where the input voltage from a battery is too low to drive the system. This chip can step-up the low voltage and provide voltage for the system. Additionally, it can provide power for automotive, commercial, and industrial systems. The integrated boost/flybuck/inverting switch allows for easy design and efficient energy conversion.The chip also features a low quiescent current (IQ) of 0.5mA, making it ideal for power-sensitive applications such as cell phones and other mobile devices. The integrated short-circuit protection circuit provides excellent current limiting protection, ensuring safe operation. In addition, the voltage range of 4.5V to 38V makes this device usable in a wide range of applications.## Working Principle The LM2655MTCX-ADJ/NOPB operates according to a Boost/Flybuck/Inverting converter design. This involves the use of two switches and two inductors. The two switches are periodically switched and the two inductors act as an energy storage element, allowing the transfer and conversion of energy between the input and the output.When the switch is switched, current builds up in one of the inductors causing it to store energy. When the switch is then switched off, this energy is transferred to the other side of the circuit, changing the voltage and enabling energy conversion. This energy transfer process is done continually, allowing for a steady flow of conversion from the input side to the output side.At the same time, the device also features a built-in voltage comparator, which controls the switching frequency of the chips. This ensures a stable output voltage and prevents the chip from being over-driven. In addition, the chip includes a power saving diode, a current limit circuit, and a low-battery detector which all help to further reduce power consumption.## Conclusion The LM2655MTCX-ADJ/NOPB is a high efficiency step-up (boost), flybuck and inverting converter. It is designed to efficiently step-up a low input voltage to a higher output voltage and is ideal for power-sensitive applications such as cell phones and other mobile devices. The chip includes built-in power-saving and protection mechanisms, making it suitable for a variety of applications. The Boost/Flybuck/Inverting conversion mechanism allows for efficient energy conversion between the input and output, ensuring a steady output voltage.

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