SC1485数据手册集成电路（IC）的PMIC-稳压器-DCDC开关式控制器规格书PDF

描述 Description

Not Recommended for New Designs - Last Day of purchase: 5/1/11

特性 Features

• Constant on-time for fast dynamic response
• Programmable VOUT range = 0.5 – VCCA
• VIN range = 1.8 V – 25 V
• DC current sense using low-side RDS(ON) sensing or sense resistor
• Resistor programmable frequency
• Cycle-by-cycle current limit
• Digital soft-start
• Separate PSAVE option for each switcher
• Over-voltage/under-voltage fault protection
• 10 µA typical shutdown current
• Low quiescent power dissipation
• Two PGOOD indicators
• 1% reference (2% system DC accuracy)
• Efficiency >90%
• Integrated gate drivers with soft switching
• Separate enables
• Industrial temperature range
• 28-lead TSSOP package

应用 Application

·Notebook computers

·CPU I/O supplies

·Handheld terminals and PDAs

·LCD monitors

·Network power supplies

简介

SC1485属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由制造生产的SC1485DC-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。