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參數(shù)資料
| 型號： | IRU3005CW |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 83K |
| 代理商： | IRU3005CW |
IRU3004, IRU3005
4-3
Rev. 1.2
12/8/00
TYPICAL APPLICATION
DESCRIPTION
The IRU3004/IRU3005 series of controller ICs are spe-
cifically designed to meet Intel specifications for Pentium
III
microprocessor applications as well as the next
generation P6 family processors. The IC provides a single
chip controller IC for the Vcore, GTL+ and clock sup-
plies required for the Pentium III applications. These
devices feature a patented topology, that in combina-
tion 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
five-bit internal DAC meeting the latest VRM specifica-
tion. These products also feature loss-lesscurrent sens-
ing by using the RDS(on) of the high side power MOSFET
as the sensing resistor and a Power Good window com-
parator 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 func-
tion as well as programming the oscillator frequency 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 IRU3004/IRU3005 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 efficiency
Patented architecture allows fixed frequency opera-
tion as well as 100% duty cycle during dynamic
load
Minimum part count. No external compensation.
Soft start
High current totem pole driver for direct driving of the
external power MOSFET
Power Good function
PACKAGE ORDER INFORMATION
FEATURES
5-BIT PROGRAMMABLE SYNCHRONOUS BUCK
CONTROLLER IC WITH DUAL LDO CONTROLLER
APPLICATIONS
Pentium III & next generation processor DC to DC
converter application
Low cost Pentium with AGP
Ta (
°
C)
0 TO 70
0 TO 70
Device Package 2.5V Output Voltage
IRU3004CW 20-pin Plastic SOIC WB Adjustable
IRU3005CW 20-pin Plastic SOIC WB Fixed
Notes: Pentium III is trademark of Intel Corp.
Vout 3
5V
12V
VID0
3004app2-2.0
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
C12
C1
C2
C13
R9
R11
C15
C14
R12
R14
R15
Power Good
R5
C8
3.3V
R16
R17
R13
C16
R18
12
V12
HDrv
LDrv
Ct
SS
CS+
Gnd
Vfb3
D3
16
D2
17
D4
15
D1
18
D0
19
PGd
6
IRU3004
Lin1
Vfb1
CS-
V5
Vfb2
4
Lin2
20
5
8
9
7
11
10
14
3
2
13
1
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| IRU3008CWTR | 功能描述:IC REG 24-SOIC(W) RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:20 系列:SIMPLE SWITCHER® 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關(guān):52kHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12 |
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