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參數資料
| 型號： | SC1153 |
| 廠商： | Semtech Corporation |
| 英文描述： | Programmable Synchronous DC/DC Controller(用于先進微處理器的可編程同步DC/DC控制器（電壓型脈寬調制控制器）) |
| 中文描述： | 可編程同步DC / DC控制器（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： | 1/9頁 |
| 文件大小： | 169K |
| 代理商： | SC1153 |
POWER MANAGEMENT
Description
1
www.semtech.com
SC1153
Programmable Synchronous DC/DC
Controller for Advanced Processors
Features
Applications
u
Pentium
III Core Supply
u
Multiple Microprocessor Supplies
u
Voltage Regulator Modules (VRM)
u
Programmable Power Supplies
u
High Efficiency DC/DC Conversion
Revision 4/01
Typical Application Circuit
The SC1153 is a low-cost, full featured, synchronous volt-
age-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 SC1153 is ideal for imple-
menting DC/DC converters needed to power advanced
microprocessors such as Pentium
llI, 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.
SC1153 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 compen-
sated error amplifier. Power good signaling, logic com-
patible shutdown, and over voltage protection are also
provided.
The SC1153 operates at a fixed 200KHz, providing an
optimum compromise between efficiency, external com-
ponent size, and cost.
u
Low cost / full featured
u
Synchronous operation
u
5 Bit VID
programmable output
u
On-chip power good and OVP functions
u
Designed to meet Intel VRM8.4 (Pentium
III)
u
1.3V to 3.5V Range, 1% tolerance
0.1uF
0.1uF
PWRGOOD
+5V
VID0
0.1uF
+
1500uF
x4
+
1500uF
x2
IRL3103S
10
EN
+
4.7uF
IRL3103S
SC1153
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
VID1
4uH
+12V
VID4
0.1uF
1.00k
VID2
VCCP
5mOhm
OVP
VID3
2.32k
Pentium
llI Power Supply
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PDF描述 |
|---|---|
| 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)) |
| SC1155EVB | PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER WITH VRM 9.0 VID RANGE |
| SC1155CSW | PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER WITH VRM 9.0 VID RANGE |
| SC1155CSW.TR | PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER WITH VRM 9.0 VID RANGE |
| SC1155 | 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1.1V-1.85V)) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| SC1155 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Programmable Synchronous DC/DC Hysteretic Controller with VRM 9.0VID Range |
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