Semtech Corporation SC1545
The SC1545 was designed for instantly available motherboard applications. The device provides the capability to control three separate supplies. The SC1545 is available in the surface mount SO-8 package.DESCRIPTION
As part of the Semtech family of SmartLDO’s it provides additional control functions not available in a standard LDO. 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.FEATURES
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● 500mA LDO with Over Current Protection (OCP) ±2.5% LDO regulation over line, load and temperature Power sequencing for three supplies
APPLICATIONS
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● Instantly available motherboards Embedded systems Desktop computers ORDERING INFORMATION Part Number SC1545CS (1) Package SO-8 Note: (1) Add suffix ‘TR’ for tape and reel packaging. TYPICAL APPLICATION CIRCUIT 2.5V IN Q1 2.5V OUT Si4410 C1 2 x 100uF C2 100uF 3.3V IN Q2 3.3V OUT IRLMS680...