|
|
Número de pieza | SC1151CS | |
Descripción | PROGRAMMABLE DC/DC CONTROLLER FOR ADVANCED MICROPROCESSORS | |
Fabricantes | Semtech Corporation | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de SC1151CS (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
No Preview Available ! PROGRAMMABLE DC/DC CONTROLLER
FOR ADVANCED MICROPROCESSORS
SC1151
March 11, 1998
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The SC1151 voltage mode controller contains most of
the circuitry necessary to implement a DC/DC con-
verter for powering advanced microprocessors such
as Klamath, both in single and multiple processor con-
figurations.
The SC1151 features an integrated 5 bit D/A con-
verter, pulse by pulse current limiting, integrated
power good signaling, logic compatible shutdown and
on-board over voltage protection (OVP).
The SC1151 operates at a fixed frequency of 200kHz,
providing an optimum compromise between size, effi-
ciency and cost in the intended application areas.
The integrated D/A converter provides programmabil-
ity of output voltage from 2.0V to 3.5V in 100mV in-
crements and 1.80V to 2.05V in 50mV increments with
no external components.
The SC1151 provides an OVP output which can be
used to trigger a crowbar circuit for true over voltage
protection.
FEATURES
• 85% efficiency
• 5 bit DAC for output programmability
• On chip power good and OVP functions
• Designed for Intel Klamath VRM8.1 requirements
APPLICATIONS
• Klamath microprocessor supplies
• Klamath VRM modules
• 1.8V to 3.5V microprocessor supplies
• Programmable power supplies
ORDERING INFORMATION
DEVICE(1)
PACKAGE TEMP RANGE (TJ)
SC1151CS
SO-16
0° to 125°C
Note:
(1) Add suffix ‘TR’ for tape and reel.
BLOCK DIAGRAM
VID4
VID3
VID2
VID1
VID0
VCC
CSm CSp
1.25V REF
D/A AND
SHUTDOWN
LOGIC
VCC
DECODED SHUTDOWN SIGNAL
CURRENT LIMIT
70mV
-
+
OSCILLATOR
R
Q
S
SHUTDOWN
LEVEL SHIFT
AND DRIVE
BST
DH
PGND
VOSENSE
PWRGOOD
VCC
OVP
+
-
+
-
+
-
+
-
ERROR
AMP
-
+
GND
A17043A
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol Maximum Units
VCC to GND
PGND to GND
VIN -0.3 to 7 V
±1 V
BST to GND
-0.3 to 15
V
Operating
Temperature Range
Storage
Temperature Range
Lead Temperature
(Soldering) 10 sec
TA
TSTG
TLEAD
0 to 70
-65 to +150
300
°C
°C
°C
GND
VCC
OVP
PWRGOOD
CSm
CSp
PGND
DH
1
2
3
4
5
6
7
8
16 VID0
15 VID1
14 VID2
13 VID3
12 VID4
11 VOSENSE
10 SHUTDOWN
9 BST
© 1998 SEMTECH CORP.
Pentium is a registered trademark of Intel Corporation
1
652 MITCHELL ROAD NEWBURY PARK CA
1 page PROGRAMMABLE DC/DC CONTROLLER
FOR ADVANCED MICROPROCESSORS
March 11, 1998
CHARACTERISTIC CURVES
SC1151 Efficiency in Application circuit 16935F
100.0%
Application circuit 16935F Ripple, 3.1V, 10A out
95.0%
90.0%
85.0%
80.0%
75.0%
3.50V Set
3.00V Set
2.40V Set
2.00V Set
70.0%
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
Output Current (Amps)
SC1151
Application circuit 16935F Transient Response, 3.1V, 0.3A to 10A
Vo at Io=300mA steady state
Vo at Io=10A steady state
Steady state voltage
levels are superimposed
for reference.
SC1151 Regulation in Application circuit 16935F
0.050
0.040
0.030
0.020
0.010
0.000
-0.010
-0.020
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0
Output Current (Amps)
© 1998 SEMTECH CORP.
5
652 MITCHELL ROAD NEWBURY PARK CA
5 Page |
Páginas | Total 6 Páginas | |
PDF Descargar | [ Datasheet SC1151CS.PDF ] |
Número de pieza | Descripción | Fabricantes |
SC1151CS | PROGRAMMABLE DC/DC CONTROLLER FOR ADVANCED MICROPROCESSORS | Semtech Corporation |
Número de pieza | Descripción | Fabricantes |
SLA6805M | High Voltage 3 phase Motor Driver IC. |
Sanken |
SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |