DESCRIPTION

The SC1545 was designed for instantly available motherboard applications. As part of the Semtech family of SmartLDO’s it provides additional control functions not available in a standard LDO.

The device provides the capability to control three separate supplies. There is an on-board 500mA, 2.5V LDO with current limit protection, and drive pins for an N-channel MOSFET and a P-channel MOSFET. Internal logic circuitry ensures that the system starts up in a controlled manner, and that the correct outputs are enabled during specific sequences of BF_CUT and SLP.

The LDO draws its power from the 5V standby supply, and the N-channel MOSFET drive is derived from the 12V supply.

The SC1545 is available in the surface mount SO-8 package.

FEATURES

? 500mA LDO with Over Current Protection (OCP)

? ±2.5 LDO regulation over line, load and temperature

? Power sequencing for three supplies

APPLICATIONS

? Instantly available motherboards

? Embedded systems

? Desktop computers

SC1545屬于集成電路（IC） > 特殊用途穩(wěn)壓器。Semtech Corporation制造生產(chǎn)的SC1545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(jī)電壓調(diào)節(jié)、DDR 端接、液體透鏡控制、摩托車轉(zhuǎn)向信號(hào)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(dòng)機(jī)管理等。