SY21242 Overview
The SY21242 high efficiency step-up regulator operates using current mode control, over an input voltage range from 2V to 6V. It integrates an Nchannel MOSFET with low 120mΩ RDS(ON) to minimize conduction loss. The 1MHz switching frequency and internal pensation reduce external ponent count and save PCB space, and the built-in internal softstart circuitry minimizes inrush current at startup.
SY21242 Key Features
- Wide 2V to 6V Input Range
- Up to 6V Output Voltage
- Low RDS(ON) for Internal N-Channel
- 2.5A Minimum Switch Current Limit
- 1MHz Switching Frequency
- Minimum On-Time: 100ns Typical
- Minimum Off-Time: 100ns Typical
- Internal Soft-Start Limits Inrush Current
- ±2% 0.6V Reference
- RoHS-pliant and Halogen-Free