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參數(shù)資料
| 型號： | US3034CS |
| 廠商： | Unisem Group |
| 英文描述： | 8 PIN PWM SWITCHER CONTROLLER IC |
| 中文描述： | 8引腳的PWM開關(guān)控制器IC |
| 文件頁數(shù)： | 4/9頁 |
| 文件大小： | 74K |
| 代理商： | US3034CS |
US3034
4-4
Rev. 1.8
1/13/99
TYPICAL APPLICATION
Pentium Core Supply Application (US3034 and US3033 Dual Layout)
Low Cost 4 Bit VID
**
R9
3034app2-1.0
5V
12V
C3
R3
C5
C8
L1
Q2
C1
L2
R4
C7
1
2
D1
R2
C4
R5A
R5B
R5C
R5D
R5E
3
4
5
6
7
8
JP1
R1
Vout
C2
R8
R6
C6
R7
1
2
3
4
5
6
7
8
SS/
V12
Drv V12
Vfb Vhyst
Gnd
CS-/
Vfb2
CS+/
Drv2
U1
Figure2- Typical application of US3034 in a flexible motherboard with the 4 bit VID output voltage selection. This circuit is done
using a dual layout with the US3033 part . The advantage of this circuit is that it uses a single jumper that programs the output voltage
in 16 steps with 0.1V steps from 2V to 3.5V, designed for Intel P55,P54 AMD K5 & K6 as well as Cyrix M1 and M2 applications.
JP1
1-2
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
JP1
3-4
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
JP1
5-6
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
JP1
7-8
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Output
Voltage
3.5
3.4
3.3
3.2
3.1
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
0 = Jumper block is installed.
1 = Jumper block is not installed.
** R9 can be elimi-
nated if dual layout
with US3033 is not
desired.
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