Analog Devices LT8580

Description

The LT®8580 is a PWM DC/DC converter containing an internal 1A, 65V switch. The LT8580 can be configured as either a boost, SEPIC or inverting converter. The LT8580 has an adjustable oscillator, set by a resistor from the RT pin to ground. Additionally, the LT8580 can be synchronized to an external clock. The switching frequency of the part may be free running or synchronized, and can be set between 200kHz and 1.5MHz. The LT8580 also features innovative SHDN pin circuitry that allows for slowly varying input signals and an adjust-able undervoltage lockout function.Additional features such as frequency foldback andsoft-start are integrated. The LT8580 is available in tiny thermally enhanced 3mm × 3mm 8-lead DFN and 8-lead MSOP packages

Features

1A, 65V Power SwitchnAdjustable Switching FrequencynSingle Feedback Resistor Sets VOUTnSynchronizable to External Clock nHigh Gain SHDN Pin Accepts Slowly Varying Input SignalsnWide Input Voltage Range: 2.55V to 40VnLow VCESAT Switch: 400mV at 0.75A (Typical)nIntegrated Soft-Start FunctionnEasily Configurable as a Boost, SEPIC, or Inverting ConverternUser Configurable Undervoltage Lockout (UVLO)nPin Compatible with LT3580nTiny Thermally Enhanced 8-Lead 3mm × 3mm DFN and 8-Lead MSOP PackagesnAEC-Q100 Qualified for Automotive Applications

Typical applications

• TFT-LCD Bias Supplies
• VFD Bias Supplies
• DSL Modems
• GPS Receivers
• Local Power Supply

More information

• Datasheet
• IC product information