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參數(shù)資料
| 型號： | SC1152CS |
| 廠商： | Semtech Corporation |
| 英文描述： | PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| 中文描述： | 可編程同步DC / DC控制器的先進的處理器 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大小： | 77K |
| 代理商： | SC1152CS |
SC1152
PROGRAMMABLE SYNCHRONOUS DC/DC
CONTROLLER FOR ADVANCED PROCESSORS
1998 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
April 28, 1998
1
Pentium is a registered trademark of Intel Corporation
BLOCK DIAGRAM
VCC
VCC
ERROR
AMP
D/A AND
SHUT-
DOWN
LOGIC
CONTROL
DECODED SHUTDOWN SIGNAL
OSCILLATOR
1.25V REF
+
-
+
-
CURRENT LIMIT
+
-
+
-
CS(-)
VID0
VID2
VID1
VID3
PWRGOOD
BSTH
DH
SHUTDOWN
OVP
GND
PGNDH
R
S
Q
+
-
70mV
CS(+)
+
-
VID4
BSTL
DL
PGNDL
SHOOT-THRU
VCC
LEVEL SHIFT
AND DRIVE
DRIVE
200 kHz
UPPER FET
SYNCHRONOUS
FET
GND
OPEN COLLECTORS
VOSENSE
PIN CONFIGURATION
Top View
(20-Pin SOIC)
DESCRIPTION
The SC1152 is a low-cost, full featured, synchronous
voltage-mode controller designed for use in single
ended power supply applications where efficiency is of
primary concern. Synchronous operation allows for the
elimination of heat sinks in many applications. The
SC1152 is ideal for implementing DC/DC converters
needed to power advanced microprocessors such as
Pentium
ll (Klamath), in both single and multiple pro-
cessor configurations. Internal level-shift, high-side
drive circuitry, and preset shoot-thru control, allows for
use of inexpensive n-channel power switches.
SC1152 features include an integrated 5-bit V
DAC,
temperature compensated voltage reference, triangle
wave oscillator, current limit comparator, frequency
shift over-current protection, and an accessible, inter-
nally compensated error amplifier. Power good signal-
ing, logic compatible shutdown, and over voltage pro-
tection are also provided.
The SC1152 operates at a fixed 200KHz, providing an
optimum compromise between efficiency, external
component size, and cost.
FEATURES
Low cost / full featured
Synchronous operation
5 Bit V
DAC programmable output
On-chip power good and OVP functions
Designed to meet Intel VRM8.1 (Pentium
II)
APPLICATIONS
Pentium II (Klamath) Core Supply
Multiple Microprocessor Supplies
Voltage Regulator Modules (VRM)
Programmable Power Supplies
High Efficiency DC/DC Conversion
DEVICE
(1)
PACKAGE
TEMP. RANGE (T
J
)
0 - 125°C
SC1152CS
SO-20
ORDERING INFORMATION
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
Note:
(1) Add suffix ‘TR’ for tape and reel.
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PDF描述 |
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| SC1152 | Programmable Synchronous DC/DC Controller(用于先進微處理器的可編程同步DC/DC控制器（電壓型脈寬調(diào)制控制器）) |
| SC1153CSW | PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| SC1153CSW.TR | PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| SC1153 | Programmable Synchronous DC/DC Controller(用于先進微處理器的可編程同步DC/DC控制器（電壓型脈寬調(diào)制控制器）) |
| SC1154 | Programmable Synchronous DC/DC Hysteretic Controller(用于先進微處理器的可編程同步步降DC/DC滯后型控制器（輸出電壓1.3V-3.5V)) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC1153 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| SC1153CSW | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| SC1153CSW.TR | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| SC1154 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER FOR ADVANCED PROCESSORS |
| SC1154CSW | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER FOR ADVANCED PROCESSORS |
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