SY21249
Description
The SY21249 develops a high efficiency synchronous step-down DC/DC regulator capable of delivering 11A current. The device integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.
Key Features
- Low RDS(ON) for Internal Switches (Top/Bottom): 17/7.5 mΩ
- Wide Input Voltage Range: 4~24V
- Integrated Bypass Switch: 1.5Ω
- Instant PWM Architecture to Achieve Fast Transient Responses
- Internal Soft-start Limits the Inrush Current
- Pseudo-Constant Frequency: 500kHz
- Adjustable Output Voltage Application
- 11A Output Current Capability
- ±1% Internal Reference Voltage
- PFM/USM Selectable Light Load Operation Mode
