VP3681
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 100k Hz~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.
- External RC pensation
- Internal Soft-Start
The switching frequency can be set in any value
- High Efficiency at Light Loads between 100k Hz and 1MHz with a resistor or any
- Cycle-By-Cycle Current Limit external clock source. The VP3681 can be operat-
- Over Temperature Protection ed at high switching frequency to save the solu-
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