Description

The SC1159 is a synchronous-buck switch-mode controller designed for use in single ended power supply applications where efficiency is the primary concern. The controller is a hysteretic type, with a user selectable hysteresis. The SC1159 is ideal for implementing DC/DC converters needed to power advanced microprocessors such as Pentium® llI and Athlon®, in both single and multiple processor configurations. Inhibit, under-voltage lockout and soft-start functions are included for controlled power-up.

Features

◆ Programmable hysteresis

◆ 5 bit DAC programmable output (1.050V-1.825V)

◆ On-chip power good and OVP functions

◆ Designed to meet latest Intel specifications

◆ Up to 95 efficiency

◆ +1 tolerance over temperature

Applications

◆ Server Systems and Workstations

◆ Pentium® III Core Supplies

◆ AMD Athlon® Core Supplies

◆ Multiple Microprocessor Supplies

◆ Voltage Regulator Modules

SC1159SWTR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SC1159SWTRDC-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。