Silergy SY21108
The SY21108 high efficiency 500kHz synchronous buck converter operates over a wide input voltage range of 4.5V to 18V, and can deliver an output current up to 3A. It integrates a top MOSFET and a bottom MOSFET with very low RDS(ON) to minimize conduction loss. The 500kHz pseudo-constant switching frequency enables using small external inductor and capacitor values.| Part No. | SY21108 |
|---|---|
| Datasheet | SY21108 Download |
| Manufacturer |  Silergy |
| Description | Synchronous Buck Converter |
| Buy | Stock & Price |
GENERAL DESCRIPTION
The SY21108 uses constant on-time and ripple-based control strategy to achieve fast transient response for applications with high step-down ratios, and high efficiency at light loads. It also provides cycle-by-cycle current limit protection, output under voltage protection and over temperature protection. Only the input and output capacitors, inductor, feedback resistor divider and feedforward capacitor need to be selected for the targeted application specifications. The SY21108 is available in a compact SOT23-6 package. The device is part of a family which shares the same package and pinout. The other part in the family is: SY21108E, 3A output current, FCCM (Forced Continuous Conduction Mode). SY21108 High Efficiency, 500kHz, 3A, 18V Input Synchronous Buck ConverterFEATURES
● Low RDS(ON) for Internal MOSFETs: 80mΩ Top, 40mΩ Bottom● Wide Input Voltage Range: 4.5V ~ 18V
● Up to 3A Output Current
● ±1.5% 0.6V Reference
● Precise EN Threshold
● PFM Light Load Operati...
