LT3493EDCB-3#TRPBF

Voltage - Output (Min/Fixed):	0.78V
Base Part Number:	LT3493
Supplier Device Package:	6-DFN (2x3)
Package / Case:	6-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	750kHz
Current - Output:	1.2A
Voltage - Output (Max):	34.2V
Series:	--
Voltage - Input (Max):	36V
Voltage - Input (Min):	6.8V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LT3493EDCB-3#TRPBF DC DC Switching Regulator Overview and Working Principle

LT3493EDCB-3#TRPBF is a DC/DC switching regulator integrated circuit (IC) from Linear Technology, an Analog Devices Company. This IC operates from an input voltage range of 3V to 32V, providing the ability to regulate output voltage from 0.5V down to the input voltage. Its protection features include current limit, thermal protection and soft start circuitry. Available in an 8-pin DSBGA package, this device can deliver up to 1.5A of output current and has an adjustable switching frequency that is programmable from 500kHz to 2MHz.

Application Field

The LT3493EDCB-3#TRPBF DC/DC switching regulator is a versatile and efficient device, suitable for a wide range of applications including handheld electronics, automotive, industrial and medical. It is designed to provide a stable regulated output voltage in the presence of varying input, temperature and load conditions.Some typical applications include battery-powered systems that require system power management and float charging of batteries, as well as applications with wide input voltage variations that require tight regulation of the output. Other applications include supplying power to digital circuits, LEDs and solid-state relays.

Operating Principle

The LT3493EDCB-3#TRPBF DC-DC switching regulator operates on a synchronous buck switching converter principle. In simple terms, the input voltage is applied to a switching circuit that is controlled by a high-frequency oscillator. This oscillator is used to turn the switching circuit on and off at a predetermined frequency, resulting in a pulsed current that is converted to a voltage using a step-down transformer. The output voltage of the transformer is then filtered to obtain a steady voltage at the output.The switching frequency of the oscillator is adjustable, providing the user with greater flexibility in controlling the voltage regulation. The internal protection features of the LT3493EDCB-3#TRPBF IC, such as current limit, thermal protection and soft start, ensure reliable operation and provide system robustness.

Conclusion

The LT3493EDCB-3#TRPBF DC/DC switching regulator is a highly efficient, versatile and cost-effective solution for regulating output voltage in a wide range of applications. Its adjustable switching frequency, protection features, and compact 8-pin DSBGA package make it an ideal choice for system designers.

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