DESCRIPTION

The SC1110 is a low-cost, full featured, synchronous voltage-mode controller designed to generate termination voltage in double data rate (DDR) memory systems and other applications where wide data bus need to be actively terminated. Synchronous control of the MOSFET half bridge allows power flowing bidirectionally. The termination voltage can be tightly regulated to track the chipset voltage, i.e. to be exactly 50 of that at all times.

FEATURES

• Generates termination voltages for active termination schemes

• 1 set point accuracy

• For ±7A output current, transient regulation is better than ±80mV

• VREFIN pin available

• Buffered VREFOUT for system usage

• RDSON sensing for over current protection in hiccup mode

• Soft start and logic input enabling

• 250kHz switching for best transient and efficiency performance

• Gate drive capable for 0.5A sourcing and sinking

APPLICATIONS

• For DDR memory systems

• For active termination schemes in high speed logic systems

SC1110属于集成电路（IC） > PMIC - 稳压器 - DC DC 开关式控制器。Semtech Corporation制造生产的SC1110DC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。