LM3674MFX-ADJ/NOPB

Voltage - Output (Min/Fixed):	1V
Base Part Number:	LM3674
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-30°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	2MHz
Current - Output:	600mA
Voltage - Output (Max):	3.3V
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.7V
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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LM3674MFX-ADJ/NOPB Application Field and Working Principle

The LM3674MFX-ADJ/NOPB (Later referred to as the LM3674MFX) is a DC-DC switching regulator. It belongs to the category of power management integrated circuits (PMICs) – voltage regulators – DC-DC switching regulators. It is used in a variety of applications, including a boost converter, buck converter, buck-boost converter, as well as an inverter.The LM3674MFX is a highly-integrated power management IC (PMIC) designed for boosting, inverting, and instantly supplying regulated voltages from a variety of sources. It is designed to work with input voltages from 2.8 to 18 V and output voltages from 1.2 to 18 V, and the output current can reach up to 8 A. The IC comes in the 16-pin Thermally Enhanced TSSOP (Thin Shrink Small Outline Package) package and can operate with a supply voltage of 2.8 to 6 V and a temperature range of -40°C to 125°C.The LM3674MFX is optimized for DC-DC conversion requiring high efficiency while. It integrates a powerful 32-bit microcontroller unit (MCU) which supports thousands of lines of code to process and control applications with accurate real-time communication. This makes the chip suitable for applications that require real-time control and accuracy.The LM3674MFX utilizes switching technologies to produce a high frequency output voltage that is independent of the input voltage and/or load variations. It can perform bidirectional, unidirectional, and hysteretic control using either a Synchronous rectifier or Pulse Width Modulated (PWM) technique, offering a wide range of output power conversion options for a variety of applications.The LM3674MFX is designed for seamless operation with an internal voltage regulator and support for external components. The internal voltage regulator consists of an internal voltage reference, sense resistor, and an adjustable current limit circuit, which can be enabled or disabled externally. This circuit provides an adjustable output voltage and current limit options.The LM3674MFX also supports external high-side and low-side MOSFET switches, which enable either a synchronous or non-synchronous buck or boost topology. This eliminates the need for external FETs, reducing the number of external components and simplifying the design process.The LM3674MFX also includes a programmable soft-start, adjustable over-voltage and over-current protection, and thermal protection features. It also features an internal programmable PWM cycle-by-cycle current limit, enabling the user to set the current threshold at different stages of the switch’s power cycles.The LM3674MFX is available in various packages, and is an ideal choice for high-current DC-DC switching regulator applications. It is capable of providing accurate, real-time control while reducing the number of external components required. It is designed for use in a wide range of applications, from consumer electronics to automotive, industrial, and medical devices.

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