LM3743MM-300/NOPB

Frequency - Switching:	300kHz
Base Part Number:	LM3743
Supplier Device Package:	10-VSSOP
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Current Limit, Enable, Soft Start, Tracking
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	91%
Series:	--
Voltage - Supply (Vcc/Vdd):	3 V ~ 5.5 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Introduction

The LM3743MM-300/NOPB is a high-performance voltage regulator that can be used in multiple power applications. It offers excellent linearity, low noise and fast transient response characteristics, making it ideal for a wide range of switch mode-DC to DC switching controllers, including automotive and portable applications.

Application Field

The LM3743MM-300/NOPB offers power solutions for various industrial and consumer applications. It is especially well suited for automotive and portable device applications, where low-power consumption and fast transient response are essential for reliable performance. The LM3743MM-300/NOPB can also be used in mobile phone chargers, data communications systems, process control systems and game consoles.

Working Principle

The LM3743MM-300/NOPB is a pulse width modulated (PWM) voltage regulator. It uses a voltage feedback path to control the output voltage. When the output voltage is below the reference voltage, the LM3743MM-300/NOPB increases the duty cycle and consequently the output voltage. Conversely, when the output voltage is higher than the reference voltage, the duty cycle is decreased and consequently the output voltage is reduced.The PWM signal generated by the LM3743MM-300/NOPB is used to control an N-Channel MOSFET. The output voltage can be adjusted by changing the reference voltage. The PWM signal can also be used to control the current in a series-mode inductor, allowing the LM3743MM-300/NOPB to provide adjustable output current as well as voltage.

Conclusion

The LM3743MM-300/NOPB is a high-performance voltage regulator that can be used in a wide range of power applications. Its fast transient response and excellent linearity make it an ideal solution for automotive and portable applications, while its adjustable output current capability allows it to be used in data communications systems, process control systems and game consoles. The LM3743MM-300/NOPB uses a DC to DC switching controller based on a PWM signal to control an N-Channel MOSFET, enabling the output voltage to be adjusted.

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