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參數資料
| 型號： | UC1910J |
| 英文描述： | DUAL MULTIFUNCTION VOLTAGE REGULATOR |
| 中文描述： | D / A轉換 |
| 文件頁數： | 5/6頁 |
| 文件大小： | 247K |
| 代理商： | UC1910J |
UNITRODE CORPORATION
7 CONTINENTAL BLVD.
MERRIMACK, NH 03054
TEL. (603) 424-2410
FAX (603) 424-3460
value of R
F
such that it limits the current into VSENSE
to
≤
0.5mA.
R
F
C
F
=
1
F
SWITCH
10
2
π
R
F
≥
V
OUT
0.5mA
The Overvoltage Protection output, OVP can be used
to directly drive a crowbarring SCR, as shown in Figure
3.
A typical application is shown in Figure 4 using the
UC3910 together with the UC3886 Average Current
Mode PWM Controller IC for a power supply to drive In-
tel’s PentiumPro processor.
-15
-10
-5
0
5
10
15
20
25
30
0.3
0.4
0.5
0.6
0.7
0.8
0.9
Ratio R
DIV
T
UV
OV
OVP
Figure 2. OV, UV and OVP Percentage Thresholds as a
Function of the Divider Ratio R
DIV
UC1910
UC2910
UC3910
Figure 3. Driving and SCR Using the UC3910 OVP
Signal
Figure 4. UC3910 Configured with the UC3886 for a Pentium Pro DC/DC Converter
APPLICATION INFORMATION (cont.)
UDG-96021
UDG-96019
5
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