Application Note: AN_SY8089/SY8089A High Efficiency 5.5V, 2A continuous, 3A peak, 1MHz Synchronous Step Down Regulator
1、芯片描述:
The SY8089 and SY8089A are high-efficiency, high frequency synchronous step-down DC-DC regulator IC capable of delivering up to 2A output current. The SY8089 and SY8089A operate over a wide input voltage range from 2.7V to 5.5V and integrate main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.
Low output voltage ripple and small external inductor and capacitor sizes are achieved with greater than 1MHz switching frequency. SY8089 integrates short circuit and over-voltage latch off protection(点击即可咨询芯片详细信息)
.
2、芯片特性:
• Low RDS(ON) for internal switches (top/bottom):110mΩ/80mΩ
• 2.7-5.5V input voltage range
• 2A continuous, 3A peak load current capability
• 1MHz switching frequency minimizes the external components
• Internal softstart limits the inrush current
• Reliable short circuit protection: SY8089: Latch off protection SY8089A: Hic-cup mode protection
• Reliable over-voltage protection: SY8089: Latch off protection SY8089A: No latch off protection
• 100% dropout operation
• RoHS Compliant and Halogen Free
• Compact package: SOT23-5
3、应用场景:
• LCD TV • Set Top Box • Net PC • Mini-Notebook PC • Access Point Router
4、芯片线路图:
5、封装图(脚位)
6、订购信息:
桑尼奇科技是深圳市知名的IC代理商,能为广大工程师与采购朋友提供众多类型产品,小批量当天交货,10K以上5-10天交货。