LT1946EMS8E#PBF

Voltage - Output (Min/Fixed):	2.45V
Base Part Number:	LT1946
Supplier Device Package:	8-MSOP-EP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	1.2MHz
Current - Output:	1.5A (Switch)
Voltage - Output (Max):	34V
Series:	--
Voltage - Input (Max):	16V
Voltage - Input (Min):	2.45V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tube

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LT1946EMS8E#PBF DC DC Switching Regulators Application Field and Working Principle DC/DC switching regulators are widely used in many industries to provide precise voltage control and power management solutions. The LT1946EMS8E#PBF is a high performance, fixed frequency monolithic synchronous buck step down switching regulator with special features such as spread spectrum modulation and current mode control. It is designed to support a wide range of output voltages and achieve high efficiency over a wide load range.Application FieldThe LT1946EMS8E#PBF is suitable for use in a wide variety of applications. It is particularly well-suited for applications where accurate, low-noise DC/DC conversion is critical, such as cell phones, PDAs, palmtop computers and other portable equipment. It is also used in distributed power systems, industrial control, robotics, and automotive applications. The fixed frequency of the regulator also makes it ideal for use in noise-sensitive applications.Working PrincipleThe LT1946EMS8E#PBF DC/DC switching regulator works by converting an input voltage to a precisely regulated output voltage, while providing a constant output current. The input voltage is connected to an inductor, and the output of the inductor is connected to a capacitor and the output voltage pin. The output voltage is then regulated by controlling the duty cycle of the switch connected to the input voltage.When the switch is closed (ON), the current in the inductor rises, and when it is open (OFF), the current in the inductor reduces. The energy stored in the inductor is then released to the output capacitor, producing the desired output voltage. The controller monitors the output voltage and adjusts the switching frequency to maintain the required output voltage level.The LT1946EMS8E#PBF DC/DC switching regulator has the capability to operate in two different modes. In normal mode, the device is configured to output a fixed voltage, while in pulse-skip mode, the regulator can maintain a constant current or voltage output.In order to maximize efficiency and control noise, the device also features spread spectrum modulation, in which the switching frequency is varied slightly to spread out any noise that may be generated by the switching action itself. The LT1946EMS8E#PBF also offers current-mode control, which helps provide better regulation and response to variations in line and load conditions. This mode also provides faster transient response for better voltage regulation and improved efficiency across the full load range.The LT1946EMS8E#PBF DC/DC switching regulator features an input voltage range of up to 28V, and is capable of providing up to 3A of output current at 5V output. The accuracy of the device is quite good, with a typical line regulation of 0.2%, and a typical load regulation of 0.4%.Overall, the LT1946EMS8E#PBF DC/DC switching regulator is an excellent choice for a wide range of power management applications. Its high efficiency and accurate regulation, along with the current-mode control and spread spectrum modulation, make it an ideal choice for many different applications.

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