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參數資料
| 型號： | SC1157CS |
| 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： | 1/5頁 |
| 文件大小： | 71K |
| 代理商： | SC1157CS |
SC1157
PROGRAMMABLE SYNCHRONOUS DC/DC
CONTROLLER FOR ADVANCED PROCESSORS
2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
Preliminary - August 7, 2000
1
Pentium is a registered trademark of Intel Corporation
BLOCK DIAGRAM
PIN CONFIGURATION
Top View
(16-Pin SOIC)
DESCRIPTION
The SC1157 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
SC1157 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.
SC1157 features include an integrated 4-bit V
DAC,
temperature compensated voltage reference, triangle
wave oscillator, current limit comparator, frequency
shift over-current protection, and an internally compen-
sated error amplifier.
The SC1157 operates at a fixed 140KHz, providing an
optimum compromise between efficiency, external
component size, and cost.
FEATURES
=
Low cost / full featured
=
Synchronous operation
=
4 Bit V
DAC programmable output
(1% tolerance)
=
Designed to meet Intel VRM8.2 (Pentium
II)
=
1.5% Reference
APPLICATIONS
=
Pentium II Core Supply
=
Multiple Microprocessor Supplies
=
Voltage Regulator Modules (VRM)
=
Programmable Power Supplies
=
High Efficiency DC/DC Conversion
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DEVICE
(1)
PACKAGE
(2)
TEMP. RANGE (T
J
)
0 - 125°C
SC1157CS.TR
SO-16NB
ORDERING INFORMATION
Note:
(1) Only available in tape and reel packaging. A reel
contains 2500 devices.
(2) “NB” indicates 150 MIL body.
R
S
Q
+
-
70mV
+
-
+
-
ERROR
D/A
SHOOT-THRU
VCC
CS-
BSTH
DH
SHUTDOWN
CS+
BSTL
DL
PGND
VOSENSE
REF
VID2
VID1
VID0
GND
REF
CURRENT
LEVEL SHIFT AND
SYNCHRONOUS
OSCILLATOR
VID3
相關PDF資料 |
PDF描述 |
|---|---|
| SC1157CS.TR | PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| SC1157 | Programmable Synchronous DC/DC Controller(用于先進微處理器的可編程同步DC/DC控制器（輸出電壓1.3V-2.05V,電壓型脈寬調制控制器）) |
| SC1158 | Programmable Synchronous DC/DC Controller(用于先進微處理器的可編程同步DC/DC控制器（輸出電壓2V-3.5V,電壓型脈寬調制控制器）) |
| SC1163 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| SC1162 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SC1157CS.TR | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| SC1158 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| SC1158CS | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| SC1158CS.TR | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| SC1159 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Programmable Synchronous DC/DC Hysteretic Controller with VRM 8.5 VID Range |
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