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參數(shù)資料
| 型號(hào)： | SC1154CSW |
| 廠商： | Semtech Corporation |
| 英文描述： | PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER FOR ADVANCED PROCESSORS |
| 中文描述： | 可編程同步DC / DC滯控制器的先進(jìn)的處理器 |
| 文件頁(yè)數(shù)： | 1/18頁(yè) |
| 文件大小： | 164K |
| 代理商： | SC1154CSW |
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SC1154
PROGRAMMABLE SYNCHRONOUS
DC/DC HYSTERETIC CONTROLLER
FOR ADVANCED PROCESSORS
2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
PRELIMINARY - March 1, 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)
SC1154CSW
SO-28
0 - 125°C
ORDERING INFORMATION
Note:
(1) Add suffix ‘TR’ for tape and reel.
DESCRIPTION
The SC1154 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 SC1154 is ideal for imple-
menting DC/DC converters needed to power advanced
microprocessors such as Pentium
ll, in both single
and multiple processor configurations. Inhibit, under-
voltage lockout and soft-start functions are included for
controlled power-up.
SC1154 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 2.0V to 3.5V in 100mV increments
and 1.3V to 2.05V in 50mV increments with no external
components.
The SC1154 high side driver can be configured as ei-
ther a grounded reference or as a floating bootstrap
driver. High and low side drivers have a peak current
rating of 2 amps.
FEATURES
Programmable hysteresis
5 bit DAC programmable output (1.3V-3.5V)
On-chip power good and OVP functions
Designed to meet latest Intel specifications
Up to 95% efficiency
+1% tolerance over temperature
APPLICATIONS
Server Systems and Workstations
Pentium II Core Supply
Multiple Microprocessor Supplies
Voltage Regulator Modules
PIN CONFIGURATION
Top View
(28-Pin SOIC)
SIMPLIFIED BLOCK DIAGRAM
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| SC1158CS | PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS |
| SC1403ITSTRT | 1 A DUAL SWITCHING CONTROLLER, 380 kHz SWITCHING FREQ-MAX, PDSO28 |
| SC15-11EWA | 7 SEG NUMERIC DISPLAY, HIGH EFFICIENCY RED, 38.1 mm |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| SC1155_01 | 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 |
| SC1155CSW | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER WITH VRM 9.0 VID RANGE |
| SC1155CSW.TR | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER WITH VRM 9.0 VID RANGE |
| SC1155CSWTR | 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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