LT3758AIMSE#PBF

Frequency - Switching:	100kHz ~ 1MHz
Base Part Number:	LT3758
Supplier Device Package:	10-MSOP-EP
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Enable, Frequency Control, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	No
Duty Cycle (Max):	--
Series:	--
Voltage - Supply (Vcc/Vdd):	5.5 V ~ 100 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost, Flyback, SEPIC
Output Configuration:	Positive or Negative, Isolation Capable
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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LT3758AIMSE#PBF Voltage Regulators: Application Field and Working Principle

The LT3758AIMSE#PBF is a DC/DC switching controller from Linear Technology and is widely used in a variety of applications. In particular, it is widely used in applications that require large current and low voltage power supplies such as automotive and industrial applications.

Application Field of LT3758AIMSE#PBF

The LT3758AIMSE#PBF is a high-efficiency DC/DC switching controller that can be used in a variety of applications, such as DC/DC converters, high-efficiency power supplies, LED drivers, and automotive and industrial circuits. The LT3758AIMSE#PBF is a monolithic integrated circuit that combines an internally regulated high-efficiency switching regulator, a reference voltage regulator, an internal current sense amplifier, and an overload protection circuit.The device features a wide operating voltage range and a maximum output current of 7.5A. The device also has a wide switching frequency range and can be used in both synchrostep and PFM/PWM modes. In addition, the device offers robustness with an integrated circuit solution and is capable of operation at elevated temperatures up to 150°C, making it suitable for automotive and other harsh environments.

Working Principle of LT3758AIMSE#PBF

The LT3758AIMSE#PBF voltage regulator is a Boost Regulator switching controller. The device produces a regulated output voltage from a relatively low input voltage. The regulator works by switching a charging element, such as an inductor, capacitor or combination of both, in an electrical circuit to store energy in the charging element. When the stored energy reaches a certain level, the device turns off the switching element and the stored energy is released through the output.The LT3758AIMSE#PBF switching controller is composed of an error amplifier, drivers, oscillator and compensation network. The drivers use three N-Channel MOSFETs for the synchronous rectification, power switching and overload protection. The error amplifier senses the output voltage and regulates it to the reference voltage, which is set by the external resistors and capacitors. The oscillator generates the switching frequency, and the compensation network adjusts the phase and gain of the amplifier to stabilize the output voltage.

Conclusion

The LT3758AIMSE#PBF is a high-efficiency DC/DC switching controller which offers robustness and wide voltage and current operation range. It is widely used in a variety of applications, and can be used in both synchronous and PFM/PWM modes. The device is composed of an error amplifier, drivers, oscillator and compensation network that are used to regulate the output voltage to the desired value set by the external components.

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