SC475A: Synchronous Buck Controller with Dual-Level VOUT Transition Support
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.
Collapse All
- 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 R DS(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 (Patent Pending)
- 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(TM)Technology
- High Efficiency > 90%
- Device is Fully WEEE and RoHS Compliant
- Notebook/Sub-Notebook Graphics Voltage Controllers
- Tablet PCs
- Embedded Applications
- SC475AMLTRT: Lead-Free, RoHS and WEEE Compliant, 3000 pcs.Tape & Reel
