LT3464

 Tiny Solution Size
 Low Quiescent Current
    • 25mA in Active Mode
    • 0.5mA in Shutdown Mode
 Integrated Schottky Diode
 Integrated PNP Output Disconnect with Short-Circuit Protection
Internal Reference Override Pin
 16V at 8mA from 3.6V Input
 12V at 20mA from 5V Input
 Low VCE(SAT) Switch: 190mV at 80mA
Input Range: 2.3V to 10V
 High Output Voltage: Up to 34V
 Low Profile (1mm) ThinSOT Package

VIN, SHDN, CTRL Voltage ........................................ 10V
OUT, CAP Voltage .................................................... 36V
SW Voltage .............................................................. 36V
FB Voltage ................................................................. 6V
Maximum Junction Temperature .......................... 125°C
Operating Temperature Range (Note 2) .. 40°C to 85°C
Storage Temperature Range ..................65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C

The LT 3464 is a micropower step-up DC/DC converter with integrated Schottky diode and output disconnect  packaged in an 8-lead low profile (1mm) ThinSOTTM. The small package size, high level of integration, and the use of tiny SMT components yield a solution size of less than 40mm2. The LT3464 has a typical current limit of 115mA as well as fast switching speed to allow the use of a chip inductor and small ceramic capacitors. The internal PNP disconnects the output load from the input during shutdown, and also provides output short-circuit protection. An auxiliary reference input allows the user to override the internal 1.25V feedback reference with any lower value, allowing full control of the output voltage during operation.

This LT3464 features a low 25mA quiescent current, which is further reduced to less than 1mA in shutdown. A current limited fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad range of operating current. The rugged 36V switch and output disconnect circuitry allow outputs up to 34V to be easily generated in a simple boost topology.