LM3674MF-1.2

Voltage - Output (Min/Fixed):	1.2V
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):	--
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The LM3674MF-1.2 is a switching regulator that has various forms suitable for a range of applications, including automotive, industrial, medical, and consumer electronics. This regulator can provide stable and efficient power with a wide input voltage range, for example, 3V to 45V, and an adjustable output voltage of 1.8V to 44V. This DC-DC switching regulator is easy to use, making it suitable for both experienced engineers, as well as beginners. The LM3674MF-1.2 is available as either an adjustable version, or with preset and adjustable output voltage. It can deliver a constant current up to 1A, with a typical efficiency of 92%. This voltage regulator can operate in PWM and PFM modes, and has a frequency switching range of 100kHz to 1MHz. It also includes advanced features, such as over-voltage, over-current, and thermal protection, to protect the device from damage caused by excessive current or thermal conditions. The LM3674MF-1.2 provides low output ripple and good transient response, providing stable power for applications where reliability and stability are required. It is designed to be used in applications with a wide range of power requirements, providing efficient and consistent power to components with varying power demand. The LM3674MF-1.2 works by using a buck topology, which reduces the voltage from a higher voltage source to a lower voltage output. This topology is ideal for applications where power requirements are constantly changing, and the voltage regulator needs to be able to switch between different voltages quickly. The buck controller uses a combination of resistors and capacitors to regulate the output voltage. The input voltage is applied to the gate circuit of the MOSFET, which increases the gate drive current. The increased drive current causes the MOSFET to begin conducting, allowing the input voltage to be applied to the low-side of the inductor. The inductor then stores the energy during the on-time period of the MOSFET and releases it during the off-time period. The output filter capacitor filters out any high frequency components, and the output voltage remains stable and consistent. The LM3674MF-1.2 offers excellent thermal performance with its low thermal resistance, allowing for high power dissipation without the use of a heat sink. The device also features an enable pin for remote on/off control and the ability to operate in low power mode with a power savings of 65%. This voltage regulator is also highly cost-effective, making it a great choice for applications looking to save on costs without sacrificing performance. The LM3674MF-1.2 is a versatile switching regulator well-suited for a variety of applications. With its wide input voltage range, adjustable output voltage, low power mode, excellent thermal performance, and low cost, the LM3674MF-1.2 is an excellent choice for both novice and experienced engineers looking for a reliable and cost-effective voltage regulator.

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