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650mA Micropower Low Noise Boost Converter with Output Disconnect
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LT3495/LT3495B/
LT3495-1/LT3495B-1
650mA/350mA Micropower
Low Noise Boost Converter
with Output Disconnect
FEATURES DESCRIPTION Low Quiescent Current 60µA in Active Mode 0.1µA in Shutdown Mode
n Low Noise Control Scheme (Switching Frequency
Always Stays Above Audible Range for LT3495/-1)
n Integrated Power NPN: 650mA Current Limit (LT3495/B) 350mA Current Limit (LT3495-1/B-1)
n Integrated Output Disconnect
n Integrated Output Dimming
n Wide input range: 2.5V to 16V
n Wide output range: Up to 40V
n Integrated feedback resistor
n Tiny 10-Lead 3mm × 2mm DFN Package The LT®3495/LT3495B/LT3495-1/LT3495B-1 are low noise
boost converters with integrated power switch, feedback
resistor and output disconnect circuitry. The parts control
power delivery by varying both the peak inductor current
and switch off-time. This novel* control scheme results
in low output voltage ripple as well as high efficiency
over a wide load range. For the LT3495/LT3495-1, the
off-time of the switch is not allowed to exceed a fixed
level, guaranteeing the switching frequency stays above …