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 4/2Ω 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