SY8284B Overview
The SY8284B develops a high efficiency synchronous step-down DC/DC regulator capable of delivering 4A current. The device integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. In addition, it operates at pseudoconstant frequency of 600kHz under heavy load conditions to minimize the size of inductor and capacitor.
SY8284B Key Features
- Low RDS(ON) for Internal Switches (top/bottom): 85/35 mΩ
- Wide Input Voltage Range: 4~23V
- Integrated Bypass Switch: 1.5Ω
- Instant PWM Architecture to Achieve Fast
- Internal 1.2ms Soft-start Limits the Inrush
- Pseudo-constant Frequency: 600kHz
- Fixed 3.338V Output Voltage
- 4A Output Current Capability
- 100mA LDO Current Capability
- ±1% Internal Reference Voltage