LM2745MTC

Frequency - Switching:	50kHz ~ 1MHz
Base Part Number:	LM2745
Supplier Device Package:	14-TSSOP
Package / Case:	14-TSSOP (0.173", 4.40mm Width)
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	86%
Series:	--
Voltage - Supply (Vcc/Vdd):	3 V ~ 6 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tube

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The LM2745MTC is a high performance, extended-range, integrated step-up voltage regulator for applications requiring higher input voltage than what typical linear voltage regulators can achieve. The device is capable of managing up to 27V. Its input voltage range of 3V to 27V makes it suitable for a wide range of voltage management applications. Its main application fields are industrial, telecommunications, consumer and automotive. It can be used in various applications including communication systems, digital cameras, UPS and PDAs. Due to its extended input voltage range, it can also be used in automotive, industrial and medical applications. The device also offers several integrated features such as a power-on reset, undervoltage and overvoltage protection, an adjustable soft start and current limit which makes it easy to use. This also helps to reduce design, programming and debugging times.The device has been designed for maximum efficiency, with output range of 0.4V to 6V, making it suitable for a wide variety of step-up voltage regulation applications. It offers a wide operating temperature range from -40C to 105C. The LM2745MTC works on the principle of pulse-width modulation (PWM). It modulates the width of the pulse to control the output voltage. The output voltage is regulated by detecting the output current and adjusting the duty cycle of the pulse accordingly. The output voltage is set by adjusting the internal pulse width modulation frequency, or by selecting either a fixed frequency or a delayed ramp-up. The LM2745MTC also offers several protection features including over-voltage, under-voltage, and output current-limit protection. Additionally, it incorporates thermal compensation to prevent current limit foldback over temperature. The protection circuitry can latch off to protect the device and system in the event of strong transients or overvoltage conditions. The LM2745MTC is designed to minimize energy loss, as well as to reduce EMI and minimize ground current. It is offered in a small 4-mm x 5-mm exposed-pad MSOP package, which makes it suitable for space constrained applications. In summary, the LM2745MTC is an integrated, highly efficient, high-performance step-up DC-DC switching regulator suitable for a wide range of voltage management applications. It operates on the principle on pulse-width modulation, and offers several integrated features such as power-on reset, undervoltage and overvoltage protection, adjustable soft start, and current limit. It is offered in a small 4x5 mm exposed-pad MSOP package, making it suitable for space constrained applications.

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