LT8580IDD#PBF

Voltage - Output (Min/Fixed):	1.2V
Base Part Number:	LT8580
Supplier Device Package:	8-DFN (3x3)
Package / Case:	8-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	200kHz ~ 1.5MHz
Current - Output:	1.2A (Switch)
Voltage - Output (Max):	65V (Switch)
Series:	--
Voltage - Input (Max):	40V
Voltage - Input (Min):	2.55V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Boost, Cuk, SEPIC
Output Configuration:	Positive or Negative
Function:	Step-Up, Step-Up/Step-Down
Part Status:	Active
Packaging:	Tube

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Introduction

The LT8580IDD#PBF is a versatile integrated DC-DC switch mode regulator from Linear Technology, part of the ever popular LTC4112 series. It provides adjustable outputs up to 150V and is designed to address a wide range of these applications. With its wide input voltage range, low current draw, adjustable frequency and output voltage, this IC can be used in a variety of DC to DC conversion applications.

Operation

The LT8580IDD#PBF operates in a non-synchronous Buck/Push-Pull or Buck/Buck/Buck configuration to provide high efficiency at lower power levels. It is designed to support current levels up to 75A and an input voltage range of 4.5V-24V. Power-Good and Current-Sense functions ensure maximum protection for the load. The switching frequency can be adjusted from 300KHz to 1MHz to match source characteristics.The unit accepts an input voltage from 4.5 V to 24 V and includes a programmable frequency between 300 KHz to 1 MHz, adjustable output voltage between 8 V and 150 V, as well as various current-sense and power-good features.

Application Field

The LT8580IDD#PBF is ideal for a broad range of applications. It can be used as both a DC-DC converter and a DC-AC inverter. Common applications include:• Power supplies and low-power DC motors• Chargers, LED drivers• Industrial electronics, Communication equipment• Automobiles, Medical systems• HVAC and domestic appliances

Working Principle

The LT8580IDD#PBF functions as a voltage regulator by regulating the input voltage or current, depending on the specific application. It works by switching the input current between two different power paths at a frequency determined by the on-chip oscillator. This regulated waveform is then output as a regulated voltage or current.The input voltage or current is monitored and adjusted through a control loop. The IC contains an internal amplifier stage and an external reference resistor, which is used to set the desired output voltage or current. The current is switched between the two resistors to control the output voltage or current.

Conclusion

The LT8580IDD#PBF is an adjustable, high-efficiency switch mode regulator from Linear Technology, ideal for a broad range of applications from power supplies to LED drivers. It offers adjustable output voltage, adjustable switching frequency and various current-sense and protection features. With its wide input voltage range and low current draw, this IC is capable of offering an efficient and cost-effective solution for many DC-DC conversion applications.

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