LT1373IN8#PBF

Voltage - Output (Min/Fixed):	1.245V
Base Part Number:	LT1373
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	250kHz
Current - Output:	1.5A (Switch)
Voltage - Output (Max):	35V (Switch)
Series:	--
Voltage - Input (Max):	30V
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck, Boost, Cuk, Flyback, Forward Converter, SEPIC
Output Configuration:	Positive or Negative
Function:	Step-Up, Step-Down, Step-Up/Step-Down
Part Status:	Active
Packaging:	Tube

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LT1373IN8#PBF is a DC-DC switching regulator integrated circuit (IC). It is designed for DC-to-DC conversion in isolated switch-mode power supplies, dc-to-dc voltage regulators and battery chargers. This device is manufactured by Linear Technology, a designer and manufacturer of linear semiconductor products that involve high speed and low power operation.DFN-8 PackageThe LT1373IN8#PBF is housed in a DFN-8package that measures 4.0 x 4.0 x 0.8 mm. It is operated with an input voltage source of 4.5V to 28V, allowing for flexibility in power supply design.OperationThe output voltage is adjustable to a wide range, with a typical range of 0.8V to 5.6V ~ 10V depending on external components. The output current capability of the LT1373IN8#PBF is 4A continuous and can reach up to 10A for short duty cycles with proper heat sinking.The device can be operated in either Fixed Frequency or Burst Mode operation depending on the application’s power level requirement. In Fixed Frequency Operation, the device operates at a maximum switching frequency of 500kHz with a typical value of 375 kHz. In Burst Mode Operation, the device maintains a relatively low quiescent current when the currents in the output are below 100mA, reducing power consumption and improving system efficiency.Protection FeaturesThe LT1373IN8#PBF offers a wide range of protection features. It includes internal current limit, thermal shutdown, cycle-by-cycle over current protection, and an adjustable UVLO (Under Voltage Lock Out) threshold.These features improve system reliability and simplify design. The IC is also EMI friendly due to its pulse-by-pulse current limit and soft-start ramping capabilities.ApplicationsThe LT1373IN8#PBF is suitable for industrial, automotive, and general purpose portable applications and has wide acceptance in the power management field. It is primarily used for point-of-load DC-DC converters, isolated DC-DC converters, single-cell Li-Ion/Li-Polymer battery chargers, and regulated voltage supply systems. The device is suitable for applications such as DC motor drive, voltage and frequency conversion systems.ConclusionThe LT1373IN8#PBF DC-DC switching regulator IC offers a wide range of features, including internal current limit, thermal shutdown, cycle-by-cycle over current protection, and an adjustable UVLO (Under Voltage Lock Out) threshold. The IC can be operated in either Fixed Frequency or Burst Mode operation, depending on power level requirements, and is suitable for a range of industrial, automotive, and general purpose applications, making it an attractive choice for power management and DC-DC conversion applications.

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