SC412A
Overview
- VBAT Range 3V to 25V
- Soft-Shutoff at Output
- Current Sense Using Low-Side RDS(ON) or Resistor * * * * * * * * * * * * *
- † volts using The constant on-time topology provides fast, dynamic response. The excellent transient response means that SC412A based solutions require less output capacitance than competing fixed-frequency converters. Switching frequency is constant until a step in load or line voltage occurs, at which time the pulse density and frequency will increase or decrease to counter the change in output voltage. After the transient event, the controller frequency returns to steady state operation. At light loads, the automatic power save mode reduces the switching frequency for improved efficiency. Sensing with Adjustable Cycle-by-Cycle Current Limit Fixed-Frequency 325kHz 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 1μA Typical Shutdown Current Tiny 3x3mm, 16 Pin MLP, Lead-free Package Low External Part Count Industrial Temperature Range 1% Internal Reference 1A/3A Non-Overlapping Gate Drive with SmartDrive™ High Efficiency
