SY81057T
Description
The SY81057T is high efficiency synchronous buck converter operates over a wide input voltage range of 4.5V to 18V, and can deliver an output current up to 2A. It integrates a top MOSFET and a bottom MOSFET with very low RDS(ON) to minimize conduction loss.
Key Features
- Low RDS(ON) for Internal MOSFETs: 130mΩ Top, 105mΩ Bottom
- Wide Input Voltage Range: 4.5V ~ 18V
- Up to 2A Output Current
- ±1% 0.765V Reference
- Precise EN Threshold
- Pulse-Frequency Modulation (PFM) Mode Operation
- Internal Soft-Start Limits the Inrush Current
- Support Smooth Startup with Pre-Biased Output
- Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses
- Cycle-by-Cycle Valley and Peak Current Limit Protection
