General Description
The SC8058 is a versatile controller designed for use in Boost, SEPIC and power converter and to-pologies that needs an external low-side N-MOSFET acting as primary switch. Besides cycle-by-cycle current limiting, current mode control scheme also makes it wide bandwidth and good transient response. The current limit can be pro-grammedsimply with an external resistor. The switching frequency can be set in any value between 100kHz and 1MHz with a resistor or any external clock source. The SC8058 can be operat-ed at high switching frequency to save the solu-tion board size. While entering shutdown mode,the SC8058 only sinks 5μA and it allows power supply sequencing. It has built-in protection cir-cuits such as thermal shutdown, under-voltage lockout, short circuit protection, and overvoltage protection. Internal soft-start circuitry reduces the inrush current at start-up. small MSOP-10 green SC8058 is available in package.Features
-Wide Input Voltage from 2.97V to 40V -Reference Voltage with ±1.5% Accuracy -Adjustable 100kHz~1MHz Clock Frequency -10μA Shutdown Current -1A Peak Current Limit Using Internal Driver -Current Mode Operation -Internal 4/2? MOSFET Switch -External RC Compensation -Internal Soft-Start -High Efficiency at Light Loads -Current Limit and Over Temperature Protec-tion -Adjustable Input UVLO Threshold Voltage
-MSOP-10 Green Package with RoHS Com-pliant
Applications
-Portable Speakers -Offline Power Supply -Battery Powered Device -Set-Top Box -Photovoltaic Inverters
