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PDF SC1538 Datasheet ( Hoja de datos )

Número de pieza SC1538
Descripción DUAL LINEAR CONTROLLER
Fabricantes Semtech Corporation 
Logotipo Semtech Corporation Logotipo



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SC1538 Hoja de datos, Descripción, Manual
DUAL LINEAR CONTROLLER
SC1538
PRELIMINARY - October 5, 1999
DESCRIPTION
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
FEATURES
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.
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
ORDERING INFORMATION
Part Number(1)
SC1538CS15/18
SC1538CS25/25
Output Voltages Package
1.515V and 1.818V SO-8
2.525V and 2.525V SO-8
BLOCK DIAGRAM
PIN CONFIGURATION
Top View
Note:
(1) Add suffix ‘TR’ for tape and reel packaging.
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
TA
0 to +70 °C
Operating Junction
Temperature
TJ 0 to +125 °C
Storage Temperature
Range
TSTG -65 to +150 °C
Lead Temperature
(Soldering) 10 Sec
TLEAD
300
°C
Thermal Temperature
Junction to Ambient
θJA
130 °C/W
Thermal Impedance
Junction to Case
θJC
47 °C/W
ESD Rating
ESD 2 kV
(SO-8)
© 1999 SEMTECH CORP.
1
652 MITCHELL ROAD NEWBURY PARK CA 91320

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