SC475A

Synchronous Buck Controller with Dual-Level VOUT Transition Support POWER POWERMANAGEMENT MANAGEMENT Description The SC475A is a versatile, constant on-time synchronous buck, pseudo-fixed-frequency, PWM controller intended for notebook computers 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. www.DataSheet4U.com SC475A 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 325kHz 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 Industrial Temperature Range 0.85% Internal Reference 1A/3A Non-Overlapping Gate Drive with SmartDriver™ Technology High Efficiency > 90% Device is Fully WEEE and RoHS Compliant †Patent The output voltage is adjustable from 0.75V to 5V. Additional features include cycle-by-cycle current limit, voltage soft-start, under-voltage protection, programmable over-current protection, soft ...