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參數資料
| 型號： | SC1156 |
| 廠商： | Semtech Corporation |
| 英文描述： | Programmable Synchronous DC/DC Controller(工作于單12V電源,用于先進微處理器的可編程同步DC/DC控制器（電壓型脈寬調制控制器）) |
| 中文描述： | 可編程同步DC / DC控制器（工作于單12V的電源，用于先進微處理器的可編程同步直流/直流控制器（電壓型脈寬調制控制器）） |
| 文件頁數： | 1/7頁 |
| 文件大小： | 162K |
| 代理商： | SC1156 |
POWER MANAGEMENT
Description
1
www.semtech.com
SC1156
Programmable Synchronous DC/DC
Controller for Advanced Microprocessors
Features
Applications
u
Pentium
II (Klamath) Core Supply
u
Multiple MicroProcessor Supplies
u
Voltage Regulation Modules (VRM)
u
Programmable Power Supplies
u
High Efficiency DC/DC Conversion
Revision 4/01
Typical Application Circuit
u
Low cost / full featured
u
Synchronous operation
u
5 Bit VID
DAC programmable output
u
On-chip power good and OVP functions
u
Designed to meet Intel VRM8.1 (Klamath)
The SC1156 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
SC1156 is ideal for implementing DC/DC converters
needed to power advanced microprocessors such as
Pentium
ll (Klamath), in both single and multiple
processor configurations. Internal level-shift, high-side
drive circuitry, and preset shoot-thru control, allows for
use of inexpensive n-channel power switches.
SC1156 features include an integrated 5-bit VID DAC, tem-
perature compensated voltage reference, triangle wave
oscillator, current limit comparator, frequency shift
over-current protection, and an accessible, internally
compensated error amplifier. Power good signaling, logic
compatible shutdown, and over voltage protection are
also provided.
The SC1156 operates at a fixed 200KHz, providing an
optimum compromise between efficiency, external com-
ponent size, and cost.
+
8C2
R7
VID1
U1
SC1156CS
1
2
3
4
5
6
7
8
13
14
15
16
17
18
19
20
11
10
12
9
GND
VCC
OVP
PWRGOOD
CS-
CS+
PGNDH
DH
BSTH
EN
VOSENSE
VID4
VID3
VID2
VID1
VID0
DL
PGNDL
BSTL
NC
VID2
12V IN
Q2
IRL3302S
C9
VID4
L1
4uH
C12
0.1uF
POWERGOOD
OVP
Q1
IRL3302S
R6
10
C1
0.1uF
R1
5mOhm
R4
1.00k
VID3
+
C4
+
C8
1500uF
+
C6
1500uF
0.C10
ENABLE
VID0
C11
0.1uF
+
C3
R3
3.9
D1
1N4148
R5
2.32k
+
C5
1500uF
R2
3.9
+
C7
1500uF
Pentium
ll Power Supply
相關PDF資料 |
PDF描述 |
|---|---|
| SC1157CS | PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| 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 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SC1156CSW | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED MICROPROCESSORS |
| SC1157 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| SC1157CS | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| 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 |
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