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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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SC1112STRT 데이터시트(PDF) 1 Page - Semtech Corporation |
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SC1112STRT 데이터시트(HTML) 1 Page - Semtech Corporation |
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1 / 23 page  POWER MANAGEMENT 1 www.semtech.com SC1112 Triple Low Dropout Regulator Controllers Features Applications Revision: August 30, 2006 Typical Application Circuit Description The SC1112 was designed for the latest high speed motherboards. It includes three low dropout regulator con- trollers. The controllers provide the power for the system AGTL bus Termination Voltage, Chipset, and clock circuitry. An adjustable controller with a 1.2V reference is available, while two selectable outputs are provided for the VTT (1.25 V or 1.5V, SC1112) or (1.2V or 1.5V, SC1112A) and the AGP (1.5V or 3.3V). The SC1112 low dropout regulators are designed to track the 3.3V power supply as the VTTIN supply is cycled On and Off. A latched short circuit protection is also available for the VTT output. Other features include an integrated charge pump that provides adequate gate drives for the external MOSFETs, and a capacitive programable delay for the power good signal. Triple linear controllers Selectable and adjustable output voltages LDOs track input voltage within 200mV (Function of the MOSFETs used) until regulation Integrated charge pump Programmable power good delay signal Latched over current protection (VTT) Pb-free package available, fully WEEE and RoHS compliant Pentium® III Motherboards Triple power supplies Q1 RA SC1112/A PWRGD DELAY 5VSTBY VTTSEL AGPSEL GND FC CAP+ CAP- VTTGATE VTTSEN AGPGATE AGPSEN ADJGATE ADJSEN VTTIN ADJ Q2 C14 330u C12 330u AGP SELECT Signal C8 330u AGP C17 0.1u RB C16 330u C3 0.1u C1 10u C18 330u VTT SELECT Signal POWER GOOD C5 22n C10 1u C13 0.1u +3.3V R1 1K +5V STBY Q3 C11 0.1u C9 0.1u VTT C6 330u VTT C19 330u C2 |
유사한 부품 번호 - SC1112STRT |
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유사한 설명 - SC1112STRT |
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