The LT8580 can be configured as either a boost, SEPIC or an inverting converter. Its switching frequency can be programmed, via a single resistor or synchronized to an external clock, between 200kHz and 1.5MHz, minimizing external component sizes. The combination of a 3mm x 3mm DFN package (or MSOP-8E) and tiny externals ensures a very compact footprint while reducing solution cost.

The LT8580’s low V switch, 0.4V at 0.75A, delivers efficiencies of up to 86%. Undervoltage lockout (UVLO) is user adjustable for optimal system performance. A single feedback resistor sets the output voltage, minimizing external components. Other features include external synchronization capability, internal soft-start and thermal shutdown protection.

The LT8580EDD is available in a 3mm x 3mm DFN-8 package and the LT8580EMS8E is offered in a thermally enhanced MSOP-8 package. Pricing starts at $2.35 each for 1,000 piece quantities. Industrial temperature (-40°C to 125°C) versions, the LT8580IDD and the LT8580IMS8E are also available, priced starting at $2.59 each for 1,000 piece quantities.

Finally, high temperature (-40°C to 150°C) versions, the LT8580HDD and the LT8580HMS8E, are

available, priced starting at $2.84 each for 1,000 piece quantities. All versions are available from stock.

Features:

－ 1A, 65V Power Switch

－ Adjustable Switching Frequency

－ Single Feedback Resistor Sets V

－ Synchronizable to External Clock

－ High Gain SHDN Pin Accepts Slowly Varying Input Signals

－ Wide Input Voltage Range: 2.55V to 40V

－ Low V Switch: 400mV at 0.75A(Typical)

－ Integrated Soft-Start Function

－ Easily Configurable as a Boost, SEPIC,or Inverting Converter

－ User Configurable Undervoltage Lockout(UVLO)

－ Pin Compatible with LT3580

－ Tiny Thermally Enhanced 8-Lead 3mm x 3mm DFN and 8-Lead MSOP Packages