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參數(shù)資料
| 型號： | US3012 |
| 廠商： | Unisem Group |
| 英文描述： | 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC |
| 中文描述： | 5位可編程同步降壓控制器芯片 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大小： | 75K |
| 代理商： | US3012 |
US3012/3012A
4-1
Rev. 1.0
5/6/98
TYPICAL APPLICATION
DESCRIPTION
The US3012 family of controller ICs are specifically de-
signed to meet Intel specification for Pentium II
and
Pentium Pro
microprocessor applications as well as
the next generation P6 family processors. These prod-
ucts feature a patented topology that in combination
with a few external components as shown in the typical
application circuit below ,will provide in excess of 16A
of output current for an on- board DC/DC converter while
automatically providing the right output voltage via the 5
bit internal DAC .These devices also feature,
loss less
current sensing by using the Rds-on of the high side
Power MOSFET as the sensing resistor
, a Power Good
window comparator that switches its open collector out-
put low when the output is outside of a
±
10% window .
Other features of the device are ; Undervoltage lockout
for both 5V and 12V supplies as well as an external
programmable soft start function as well as program-
ming the oscillator frequency by using an external ca-
pacitor.
Dual Layout Compatible with RC5051
Designed to meet Intel specification of VRM8.2
& VRM8.3 for Pentium II
On board DAC programs the output voltage
from 1.3V to 3.5V (US3010) & 1.8V to 3.5V for
US3010A
Loss less Short Circuit Protection
Synchronous operation allows maximum
efficiency
Patented architecture allows fixed frequency
operation as well as 100% duty cycle during
dynamic load
Soft Start
High current totem pole driver for direct
driving of the external Power MOSFET
Power Good function
APPLICATIONS
Pentium II & Pentium Pro
processor DC to DC
converter application
Low cost Pentium with AGP
PACKAGE ORDER INFORMATION
Ta (
°
C)
0 TO 70
0 TO 70
PRELIMINARY DATASHEET
FEATURES
5 BIT PROGRAMMABLE SYNCHRONOUS BUCK
CONTROLLER IC
Notes: Pentium II and Pentium Pro are
trade marks of Intel Corp.
5V
12V
VID0
Power Good
3012app1-1.1
OutEn
Q2
VID1
VID2
VID3
VID4
L1
L2
C5
R2
C3
C4
C6
Q1
R3
R5
C7
R6
C11
C1
R7
C8
C2
R4
R9
R8
R12
R13
4
HDrv
LDrv
NC/Vccp
SS/Vref
CS+
Gnd
Vfb/
GndD
D3
17
D2
18
D4
8
D1
19
D0
20
US3012
En
PGd
CS-
V12
V5
12
5
9
15
10
11
14
1
3
2
16
7
13
6
NC/
GndA
NC/
GndP
Ct
R1
D1
R10
R11
C9
C10
Device Package VID Voltage Range
US3012CW 20 pin Plastic SOIC WB 1.3V to 3.5V
US3012ACW 20 pin Plastic SOIC WB 1.8V to 3.5V
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| US3012ACW | 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC |
| US3012CW | 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC |
| US3018 | 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS LDO CONTROLLER AND 200mA LDO ON BOARD |
| US3018CW | 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS LDO CONTROLLER AND 200mA LDO ON BOARD |
| US3021B | 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS TRIPPLE LDO CONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| US-3012 | 功能描述:PROTO-BOARD 12PIN 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(biāo)準(zhǔn)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(zhì):- |
| US3012ACW | 制造商:UNISEM 制造商全稱:UNISEM 功能描述:5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC |
| US3012CW | 制造商:UNISEM 制造商全稱:UNISEM 功能描述:5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC |
| US-3014 | 功能描述:PROTO-BOARD 14PIN 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(biāo)準(zhǔn)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(zhì):- |
| US3018 | 制造商:UNISEM 制造商全稱:UNISEM 功能描述:5 BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS LDO CONTROLLER AND 200mA LDO ON BOARD |
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