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LT3494

Linear Technology
Part Number LT3494
Manufacturer Linear Technology
Description Micropower Low Noise Boost Converters
Published Jan 16, 2010
Detailed Description LT3494/LT3494A Micropower Low Noise Boost Converters with Output Disconnect FEATURES ■ DESCRIPTION The LT®3494/LT3494A ...
Datasheet PDF File LT3494 PDF File

LT3494
LT3494

Overview
LT3494/LT3494A Micropower Low Noise Boost Converters with Output Disconnect FEATURES ■ DESCRIPTION The LT®3494/LT3494A are low noise boost converters with integrated power switch, Schottky diode and output disconnect circuitry.
The parts use a novel* control technique resulting in low output voltage ripple as well as high efficiency over a wide load current range.
This technique guarantees that the switching frequency stays above the audio band for the entire load range.
The parts feature a high performance NPN power switch with a 350mA and 180mA current limit for the LT3494A and LT3494 respectively.
The quiescent current is a low 65μA, which is further reduced to less than 1μA in shutdown.
The internal disconnect circuitry allows the output voltage to be isolated from the input during shutdown.
An auxiliary reference input (CTRL pin) overrides the internal 1.
225V feedback reference with any lower value allowing full control of the output voltage during operation.
The LT3494/LT3494A ar...


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