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SC1538 Datasheet(PDF) 1 Page - Semtech Corporation |
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SC1538 Datasheet(HTML) 1 Page - Semtech Corporation |
1 / 4 page © 1999 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 DUAL LINEAR CONTROLLER SC1538 PRELIMINARY - October 5, 1999 1 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC1538 is a dual power supply controller designed to simplify power management on motherboards. It is part of Semtech’s Smart LDO™ family of products. The SC1538CS15/18 can provide a 1.818V power sup- ply for the I/O plane and a 1.515V power supply for the GTL+ and AGP planes. The SC1538CS25/25 can pro- vide two 2.525V supplies for clock and memory. SC1538 features include Enable controls for each lin- ear FET controller and over current protection. Over current protection is provided by feedback to the sense pins. If any output drops below 1V (typical) for greater than 4ms (typical), that output will shut down. The SC1538 is available in a SO-8 surface mount package. FEATURES • Dual power supplies • 1.515V Supply for GTL+ and AGP planes/1.818V Supply for chipset I/O and memory termination • Dual 2.525V supplies for clock and memory • Individual Enable control of each supply • Over current protection APPLICATIONS • Motherboards • Simple dual power supplies ABSOLUTE MAXIMUM RATINGS Parameter Symbol Maximum Units Input Supply Voltage VIN -0.5 to +15 V Input Pins -0.5 to +7 V Operating Temperature Range T A 0 to +70 °C Operating Junction Temperature T J 0 to +125 °C Storage Temperature Range T STG -65 to +150 °C Lead Temperature (Soldering) 10 Sec T LEAD 300 °C Thermal Temperature Junction to Ambient θ JA 130 °C/W Thermal Impedance Junction to Case θ JC 47 °C/W ESD Rating ESD 2 kV ORDERING INFORMATION Part Number (1) Output Voltages Package SC1538CS15/18 1.515V and 1.818V SO-8 SC1538CS25/25 2.525V and 2.525V SO-8 Note: (1) Add suffix ‘TR’ for tape and reel packaging. BLOCK DIAGRAM PIN CONFIGURATION (SO-8) Top View |
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