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VP3681
High-Efficiency Boost/SEPIC/Flyback DC/DC Controller
General Description
Features
The VP3681 is a versatile controller designed for - Wide Input Voltage from 2.97V to 60V
use in Boost, SEPIC and Flyback power converter - Reference Voltage with ± 3.0% Accuracy
and topologies that needs an external low-side N- - Adjustable 100kHz~1MHz Clock Frequency
MOSFET acting as primary switch. Besides cycle- - 10μA Shutdown Current
by-cycle current limiting, current mode control - 1A Peak Current Limit Using Internal Driver
scheme also makes it wide bandwidth and good - Current Mode Operation
transient response. The current limit can be pro- - Internal 4/2Ω MOSFET Switch
grammed simply with an external resistor.