SC475A
Description
The SC475A is a versatile, constant on-time synchronous buck, pseudo-fixed-frequency, PWM controller intended for notebook puters and other battery operated portable devices. The SC475A contains all the features needed to provide cost-effective control of system elements needing voltage slewing. An integrated switch provides two resistorprogrammable DC output voltages controlled by the G0 input.
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Features
VOUT Programmable 0.75V to 5.25V with Integrated Transition Support VBAT Range 3V to 25V Soft Shutoff at Output Current Sense Using Low-side RDS(ON) or Resistor Sensing Adjustable Cycle-by-Cycle Valley Current Limit 325k Hz Fixed-Frequency Constant On-Time for Fast Dynamic Response and Reduced Output Capacitance Automatic Smart Power Save† Internal Soft-Start Over-Voltage/Under-Voltage Fault Protection Power Good Output with Transition Blanking 1μA Typical Shutdown Current 500μA Typical Operating Current Tiny 3×3mm, 16 Pin MLP Package Low External Part Count...
