參數(shù)資料
型號： US3005
廠商： Unisem Group
英文描述： 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC WITH DUAL LDO CONTROLLER
中文描述： 5位可編程同步降壓控制器IC具有雙LDO控制器
文件頁數(shù)： 1/14頁
文件大?。?/td> 99K
代理商： US3005
US3004/US3005
4-1
Rev. 1.2
12/8/00
TYPICAL APPLICATION
DESCRIPTION
The US3004/5 series of controller ICs are specifically
designed to meet Intel specification for Pentium III
microprocessor applications as well as the next genera-
tion P6 family processors.
The IC provides a single
chip controller IC for the Vcore , GTL+ and clock
supplies required for the Pentium III applications
.
These devices feature a patented topology that in
combination with a few external components as shown
in the typical application circuit ,will provide in excess of
20A of output current for an on- board DC/DC converter
while automatically providing the right output voltage via
the 5 bit internal DAC meeting the latest VRM specifica-
tion .These products also feature,
loss less current sens-
ing by using the Rds-on of the high side Power
MOSFET as the sensing resistor
, a Power Good win-
dow comparator that switches its open collector output
low when the output is outside of a
±
10% window. Other
features of the device are ; Undervoltage lockout for both
5V and 12V supplies, an external programmable soft
start function as well as programming the oscillator fre-
quency by using an external capacitor.
Meets Latest VRM 8.4 Specification for PIII
Provides Single Chip Solution for Vcore, GTL+
and Clock Supply
On board DAC programs the output voltage
from 1.3V to 3.5V. The US3004/5 remains on for
VID code of (11111).
Dual linear regulator controller on board for
1.5V GTL+ and 2.5V clock supplies
Loss less Short Circuit Protection
Synchronous operation allows maximum effi-
ciency
Patented architecture allows fixed frequency
operation as well as 100% duty cycle during
dynamic load
Min part count, No external Compensation
Soft Start
High current totem pole driver for direct driv-
ing of the external Power MOSFET
Power Good function
APPLICATIONS
Pentium III & next generation processor DC to DC
converter application
Low cost Pentium with AGP
PACKAGE ORDER INFORMATION
FEATURES
5 BIT PROGRAMMABLE SYNCHRONOUS BUCK
CONTROLLER IC WITH DUAL LDO CONTROLLER
Vout 3
5V
12V
VID0
3004app2-1.9
Vout 2
Vout 1
3.3V
Q2
C9
Q4
VID1
VID2
VID3
VID4
L1
L2
C5
R1
C3
C4
C6
Q1
R2
R3
C7
R4
C10
Q3
R7
R8
C11
R6
C12
C1
C2
C13
R9
R11
C15
R10
C14
R13
R12
R14
R15
12
V12
HDrv
LDrv
Ct
SS
CS+
Gnd
Vfb3
D3
16
D2
17
D4
15
D1
18
D0
19
PGd
6
US3004
Lin1
Vfb1
CS-
V5
Vfb2
4
Lin2
20
5
8
9
7
11
10
14
3
2
13
1
Power Good
R5
C8
3.3V
Ta (
°
C)
0 TO 70
0 TO 70
Device Package 2.5V Output Voltage
US3004CW 20 pin Plastic SOIC WB Adjustable
US3005CW 20 pin Plastic SOIC WB Fixed
Notes: Pentium III is trade mark of Intel Corp.
相關PDF資料
PDF描述
US3005CW 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC WITH DUAL LDO CONTROLLER
US3007 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS NON SYNCHRONOUS , LDO CONTROLLER AND 200MmA LDO ON BOARD
US3007CW 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS NON SYNCHRONOUS , LDO CONTROLLER AND 200MmA LDO ON BOARD
US3011 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC
US3011CW 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC
相關代理商/技術參數(shù)
參數(shù)描述
US3005CW 制造商:UNISEM 制造商全稱:UNISEM 功能描述:5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC WITH DUAL LDO CONTROLLER
US3007 制造商:UNISEM 制造商全稱:UNISEM 功能描述:5 BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS NON SYNCHRONOUS , LDO CONTROLLER AND 200MmA LDO ON BOARD
US3007CW 制造商:UNISEM 制造商全稱:UNISEM 功能描述:5 BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS NON SYNCHRONOUS , LDO CONTROLLER AND 200MmA LDO ON BOARD
US3008 制造商:UNITPOWER 制造商全稱:UNITPOWER 功能描述:N-Ch 30V Fast Switching MOSFETs
US-3008 功能描述:PROTO-BOARD 8PIN THRU-HOLE SIP RoHS:是 類別:原型開發(fā)產(chǎn)品 >> 適配器，可互換接口板 系列:3000, UNI-SIP™ 標準包裝:1 系列:- 原型板類型:- Package Accepted:- 尺寸/尺寸:- 位置數(shù):- 孔直徑:- 板厚度:- 材質:-
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