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參數(shù)資料
| 型號： | UA723MU |
| 元件分類： | RS-485 |
| 英文描述： | Low power RS-485/RS-422 transceiver |
| 中文描述： | 積極可調(diào)電壓穩(wěn)壓器 |
| 文件頁數(shù)： | 4/17頁 |
| 文件大?。?/td> | 469K |
| 代理商： | UA723MU |
μ
A723
PRECISION VOLTAGE REGULATORS
SLVS057D – AUGUST 1972 – REVISED JULY 1999
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
Table 1. Resistor Values (k
) for Standard Output Voltages
OUTPUT
VOLTAGE
(V)
APPLICABLE
FIGURES
(SEE NOTE 5)
FIXED OUTPUT
±
5%
OUTPUT ADJUSTABLE
±
10%
(SEE NOTE 6)
R1
(k
)
R2
(k
)
R1
(k
)
P1
(k
)
P2
(k
)
3.0
1, 5, 6, 9, 11, 12 (4)
4.12
3.01
1.8
0.5
1.2
3.6
1, 5, 6, 9, 11, 12 (4)
3.57
3.65
1.5
0.5
1.5
5.0
1, 5, 6, 9, 11, 12 (4)
2.15
4.99
0.75
0.5
2.2
6.0
1, 5, 6, 9, 11, 12 (4)
1.15
6.04
0.5
0.5
2.7
9.0
2, 4, (5, 6, 9, 12)
1.87
7.15
0.75
1.0
2.7
12
2, 4, (5, 6, 9, 12)
4.87
7.15
2.0
1.0
3.0
15
2, 4, (5, 6, 9, 12)
7.87
7.15
3.3
1.0
3.0
28
2, 4, (5, 6, 9, 12)
21.0
7.15
5.6
1.0
2.0
45
7
3.57
48.7
2.2
10
39
75
7
3.57
78.7
2.2
10
68
100
7
3.57
105
2.2
10
91
250
7
3.57
255
2.2
10
240
–6
(see Note 7)
3, 10
3.57
2.43
1.2
0.5
0.75
–9
3, 10
3.48
5.36
1.2
0.5
2.0
–12
3, 10
3.57
8.45
1.2
0.5
3.3
–15
3, 10
3.57
11.5
1.2
0.5
4.3
–28
3, 10
3.57
24.3
1.2
0.5
10
–45
8
3.57
41.2
2.2
10
33
–100
8
3.57
95.3
2.2
10
91
–250
8
3.57
249
2.2
10
240
NOTES:
5. The R1/R2 divider can be across either VO or V(ref). If the divider is across
V(ref), use the figure numbers without parentheses. If the divider is across
VO, use the figure numbers in parentheses.
6. To make the voltage adjustable, the R1/R2 divider shown in the figures must
be replaced by the divider shown below.
R1
P1
R2
Adjustable Output Circuit
7. For Figures 3, 8, and 10, the device requires a minimum of 9 V between VCC+
and VCC– when VO is equal to or more positive than –9 V.
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