Description

The SC1474 PowerStep III? IC is a single chip high-performance Hysteretic PWM controller. With dual integrated Smart? Drivers, it powers advanced Pentium? 4 processors. The SC1474 features extended Intel Mobile Voltage Positioning (IMVP) to increase battery life by reducing the voltage at the processor when it is heavily loaded. It directly supports Intel’s SpeedStep? requirements for even longer battery life. The SC1474 automatically detects performance and battery mode VIDs. In addition, it integrates direct “deeper sleep” mode support. All operating modes incorporate automatic “power-save” to prevent negative current flow in the low-side FET during light loading conditions, saving even more power.

Features

◆ IMVP3 compliant single chip solution

◆ High speed Dual phase hysteretic controller

◆ VID programmable output

◆ Dual integrated 2A/4A drivers

◆ Integrated VID regulator controller

◆ Automatic performance/battery mode detection

◆ Dynamic phase current matching

◆ Under-voltage lock out on all Vcc inputs

◆ Over-voltage protection on CORE

◆ Current Limit protection on CORE

◆ Thermal protection

◆ Programmable soft-start

◆ Powergood flag with blanking during VID changes

◆ Automatic powersave at light load

◆ TSSOP-38 package

◆ Industrial temperature range

Applications

◆ Advanced Intel microprocessors

SC1474屬于集成電路（IC） > 特殊用途穩(wěn)壓器。Semtech Corporation制造生產(chǎn)的SC1474特殊用途穩(wěn)壓器該系列產(chǎn)品用于電源控制、某種形式的轉(zhuǎn)換，適用于特定的復(fù)雜應(yīng)用。因此，各種產(chǎn)品特性集差異較大，包括空燃比傳感器接口、汽車交流發(fā)電機電壓調(diào)節(jié)、DDR 端接、液體透鏡控制、摩托車轉(zhuǎn)向信號控制、熱電 (peltier) 冷卻器控制、壓電觸覺控制、閥門控制、小型發(fā)動機管理等。