LT1268CT#PBF

Voltage - Output (Min/Fixed):	1.244V
Base Part Number:	LT1268
Supplier Device Package:	TO-220-5
Package / Case:	TO-220-5 Formed Leads
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	150kHz
Current - Output:	7.5A (Switch)
Voltage - Output (Max):	60V (Switch)
Series:	--
Voltage - Input (Max):	30V
Voltage - Input (Min):	3.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck, Boost, Flyback
Output Configuration:	Positive or Negative
Function:	Step-Up, Step-Down, Step-Up/Step-Down
Part Status:	Active
Packaging:	Tube

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LT1268CT#PBF is a monolithic integrated circuit manufactured by Linear Technology Corporation. This product serves as a DC to DC switching regulator that is used in a variety of applications. It is a two-channel part, containing two independent regulators with a wide input voltage range of 2.3V to 40V, up to 12A of total output current, and up to 2.1V to 24V adjustable output voltage. It also contains other onboard features such as a synchronous Rectifier with a programmable current limit and overcurrent protection. In addition, it offers a low output voltage ripple of 40 mV pk-pk and power good signal.The LT1268CT#PBF can be deployed in a wide range of applications including switch-mode power supplies (SMPS), DC/DC converters, battery chargers, portable medical devices, and distributed power systems. Its primary use is to take a high input voltage from a variety of sources and convert it into a precision regulated output voltage to power the device it is connected to. The versatility and flexibility of the LT1268CT#PBF makes it a popular choice for engineers looking to integrate a reliable and efficient DC/DC converter solution into their system.The high efficiency and low power rating of the LT1268CT#PBF is achieved through Linear Technology’s proprietary Quasi-Resonant Flux-Reducing (QRFC) topology. The main feature of this topology is its ability to reduce the switch-node flux during every cycle. This reduces the duty cycle and allows for an increased efficiency by minimizing voltage overshoots at the switch node during the transition from one operating state to the other. The LT1268CT#PBF also takes advantage of synchronous rectification. With synchronous rectification, the diode used for rectification is replaced by a power MOSFET, which behaves like a diode. This reduces switching losses and can provide up to 2X the efficiency of a non-synchronous rectification diode.The device also has a few other key features that make it attractive to engineers. It offers a programmable current limit which allows the device to be configured according to the exact needs of the application. This means that you can program the maximum current output to the load, allowing you to use the LT1268CT#PBF in a wide range of applications without the need to use other additional components. In addition, the LT1268CT#PBF also provides an overcurrent protection feature. This feature allows the device to protect itself from drawing too much current from the source, and maintains a safe operation even in short-circuit conditions.The LT1268CT#PBF is an attractive choice for any designer looking for a reliable and efficient DC to DC switching converter for their system. Its excellent features, such as a wide input voltage range, up to 12A of total output current, a programmable current limit and overcurrent protection, make it well-suited for applications such as switch-mode power supplies, DC/DC converters, and battery chargers, where high efficiency and low power consumption are essential. The QRFC topology makes it possible to maximize efficiency while reducing switching losses, making the LT1268CT#PBF an excellent choice for an efficient and reliable DC to DC switching solution.

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