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參數(shù)資料
| 型號(hào)： | SC1155EVB |
| 廠商： | Semtech Corporation |
| 英文描述： | PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER WITH VRM 9.0 VID RANGE |
| 中文描述： | 可編程同步DC / DC控制器，電源模組采用滯回西元范圍9.0 |
| 文件頁(yè)數(shù)： | 1/19頁(yè) |
| 文件大?。?/td> | 190K |
| 代理商： | SC1155EVB |
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SC1155
PROGRAMMABLE SYNCHRONOUS
DC/DC HYSTERETIC CONTROLLER
WITH VRM 9.0 VID RANGE
2000 SEMTECH CORP.
PRELIMINARY - August 7, 2000
1
Pentium is a registered trademark of Intel Corporation
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DEVICE
(1)
PACKAGE
TEMP. RANGE (T
J
)
0 - 125°C
SC1155CSW.TR
SO-28
SC1155EVB
Evaluation Board
ORDERING INFORMATION
Note:
(1) Only available in tape and reel packaging. A reel
contains 1000 devices.
DESCRIPTION
The SC1155 is a synchronous-buck switch-mode con-
troller designed for use in single ended power supply
applications where efficiency is the primary concern.
The controller is a hysteretic type, with a user se-
lectable hysteresis. The SC1155 is ideal for implement-
ing DC/DC converters needed to power advanced mi-
croprocessors such as Pentium
llI and Athlon
,
in both
single and multiple processor configurations. Inhibit,
under-voltage lockout and soft-start functions are in-
cluded for controlled power-up.
SC1155 features include an integrated 5 bit D/A con-
verter, temperature compensated voltage reference,
current limit comparator, over-current protection, and
an adaptive deadtime circuit to prevent shoot-through
of the power MOSFET during switching transitions.
Power good signaling, logic compatible shutdown, and
over-voltage protection are also provided. The inte-
grated D/A converter provides programmability of out-
put voltage from 1.1V to 1.85V in 25mV increments.
The SC1155 high side driver can be configured as
either a grounded reference or as a floating bootstrap
driver. The high and low side MOSFET drivers have a
peak current rating of 2 amps.
FEATURES
=
Programmable hysteresis
=
5 bit DAC programmable output (1.1V-1.85V)
=
On-chip power good and OVP functions
=
Designed to meet latest Intel specifications
=
Up to 95% efficiency
=
+1% voltage tolerance over temperature
APPLICATIONS
=
Server Systems and Workstations
=
Intel Pentium
III Core Supplies
=
AMD Athlon
Core Supplies
=
Multiple Microprocessor Supplies
=
Voltage Regulator Modules
Athlon is a registered trademark of AMD Corporation
TYPICAL APPLICATION CIRCUIT
IOUT
1
DROOP
2
OCP
3
VHYST
4
VREFB
5
VSENSE
6
AGND
7
SOFTST
8
N/C
9
LODRV
10
LOHIB
11
DRVGND
12
LOWDR
13
DRV
14
VIN12V
15
BOOT
16
HIGHDR
17
BOOTLO
18
HISENSE
19
LOSENSE
20
IOUTLO
21
INHIBIT
22
VID4
23
VID3
24
VID2
25
VID1
26
VID0
27
PWRGD
28
SC1155CSW
R11
2.2
R12
3.9
L2
C7
0.1
R3
R1
2k
R4
1k
R2
1k
R5
100
R6
20k
C5
R7
150
R8
10k
+5V
C8
C9
+12V
R10
10k
R9
10k
C4
C6
0.1
C17-C19
L1
1uH
C16
0.1
C27
0.1
PWRGD
INHIB
Vin +5 to +12V
Vout = 1.1 to 1.85V
C2
C3
C13
0.33
IQ1
IRQ2
C8
+5V
Vout
GND
C21-C26
C12
0.33
C20
0.1
Vin
GND
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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(jìn)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)) |
| SC1156CSW | PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED MICROPROCESSORS |
| SC1156 | Programmable Synchronous DC/DC Controller(工作于單12V電源,用于先進(jìn)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）) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC1156 | 制造商:SEMTECH 制造商全稱(chēng):Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED MICROPROCESSORS |
| SC1156CSW | 制造商:SEMTECH 制造商全稱(chēng):Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED MICROPROCESSORS |
| SC1157 | 制造商:SEMTECH 制造商全稱(chēng):Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| SC1157CS | 制造商:SEMTECH 制造商全稱(chēng):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(chēng):Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
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