LM5642XMTX/NOPB

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Output Type:	Transistor Driver
Function:	Step-Down
Output Configuration:	Positive
Topology:	Buck
Number of Outputs:	2
Output Phases:	2
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 36 V
Frequency - Switching:	375kHz
Duty Cycle (Max):	98.9%
Synchronous Rectifier:	Yes
Clock Sync:	Yes
Serial Interfaces:	--
Control Features:	Current Limit, Enable, Soft Start
Operating Temperature:	-40°C ~ 125°C (TJ)
Package / Case:	28-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	28-TSSOP
Base Part Number:	LM5642

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What is the LM5642XMTX/NOPBThe LM5642XMTX/NOPB is a low-side switch controller for DC to DC switching regulators. It supports low-side switches, such as N-channel or P-channel MOSFETs, operated at constant current with a maximum current limit of 3A. It is a control IC available in an SOT-23-5L package and is designed for use in DC/DC switching regulator applications. It is a very popular choice for consumer applications like consumer electronics, automotive, computers, and more.Application FieldThe LM5642XMTX/NOPB is a versatile component that can be used in a variety of applications. It is a very popular choice for consumer applications, such as consumer electronics, automotive, computers, sports drones, surveillance cameras, and more. In addition, this switch controller can be used in industrial applications, such as industrial machines and building control systems. It is an ideal choice for DC/DC switching regulators that require low-side switches with high efficiency and excellent thermal performance. Working PrincipleThe LM5642XMTX/NOPB controller works by regulating the on/off switching state of the low-side switches. It is designed to be used with N-channel or P-channel MOSFETs and is operated at a constant current, with a maximum current limit of 3A. In addition, this switch controller is designed to provide a low output voltage ripple and high efficiency. The LM5642XMTX/NOPB also features short response times and has a low-power Start-Up Mode, which helps reduce the current consumption when the system is in standby.The LM5642XMTX/NOPB also features an Over-Current Protection mode, which is designed to detect an over-current condition in the system, limit the current to 3A, and turn off the switching device. This protects the system from an over-current situation, which could potentially damage the system. In addition, the LM5642XMTX/NOPB has a thermal protection feature which shuts down the system if the MOSFETs become too hot. ConclusionThe LM5642XMTX/NOPB is an ideal choice for applications that require a low-side switch controller for a DC to DC switching regulator. It provides excellent efficiency and thermal performance and is designed for use with N-channel or P-channel MOSFETs. In addition, the LM5642XMTX/NOPB has a short response time, an Over-Current Protection mode, and a thermal protection feature, which all allow the system to operate safely and efficiently.

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