Datasheet Analog Devices LT3473 — Ficha de datos

LT3473/LT3473A
Micropower 1A Boost
Converter with Schottky
and Output Disconnect U FEATURES DESCRIPTIO ■ The LT®3473/LT3473A are micropower step-up DC/DC
converters with integrated Schottky diode and output
disconnect circuitry in low profile DFN packages. The
small package size, high level of integration and the use of
tiny SMT components yield a solution size of less than
50mm2. The internal 1A switch allows the device to deliver
25V at up to 80mA from a Li-Ion cell, while automatic Burst
Mode operation maintains efficiency at light load. An
auxiliary reference input (CTRL) allows the user to override the internal 1.25V feedback reference with any lower
value, allowing full control of the output voltage during
operation. A PGOOD pin sinks current when the output
voltage reaches 90% of final value. ■
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