参数资料
型号: PTN78020WAH
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源模块
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封装: DIP-7
文件页数: 3/26页
文件大小: 669K
代理商: PTN78020WAH
GND
GND
R
SET
0 .05 W
1 %
C
O
330 F
m
PTN78020W
7
4
5
6
2
3
V
I
V
I
V
O
V
O
GND
Inhibit
1
Sense
Adjust
C
2.2 F
Ceramic
I
m
GND
www.ti.com .................................................................................................................................................. SLTS228B – DECEMBER 2004 – REVISED APRIL 2008
(1)
A 0.05-W rated resistor may be used. The tolerance should be 1%, with a temperature stability of 100 ppm/
°C (or
better). Place the resistor as close to the regulator as possible. Connect the resistor directly between pins 4 and 7
using dedicated PCB traces.
(2)
Never connect capacitors from VO Adjust to either GND or VO. Any capacitance added to the VO Adjust pin affects the
stability of the regulator.
Figure 24. PTN78020W VO Adjust Resistor Placement
Table 3. PTN78020W Output Voltage Set-Point Resistor Values
VO (V)
RSET (k)
VO (V)
RSET (k)
VO (V)
RSET (k)
VO (V)
RSET (k)
2.50
Open
3.7 V
50.7
6.1
12.6
9.0
4.07
2.55
1370
3.8 V
46
6.2
12.1
9.2
3.75
2.60
680
3.9 V
42.5
6.3
11.6
9.4
3.46
2.65
451
4.0 V
39.3
6.4
11.1
9.6
3.18
2.70
337
4.1 V
36.4
6.5
10.7
9.8
2.91
2.75
268
4.2 V
33.9
6.6
10.2
10.0
2.66
2.80
222
4.3 V
31.6
6.7
9.85
10.2
2.42
2.85
190
4.4 V
29.6
6.8
9.47
10.4
2.20
2.90
165
4.5 V
27.8
6.9
9.11
10.6
1.98
2.95
146
4.6 V
26.2
7.0
8.76
10.8
1.78
3.00
131
4.7 V
24.7
7.1
8.43
11.0
1.58
3.05
118
4.8 V
23.3
7.2
8.11
11.2
1.40
3.10
108
4.9 V
22.1
7.3
7.81
11.4
1.22
3.15
99.1
5.0 V
21.0
7.4
7.52
11.6
1.05
3.20
91.5
5.1 V
19.9
7.5
7.24
11.8
0.889
3.25
85.0
5.2 V
18.9
7.6
6.97
12.0
0.734
3.30
79.3
5.3 V
18.0
7.7
6.71
12.2
0.585
3.35
74.2
5.4 V
17.2
7.8
6.46
12.4
0.442
3.40
69.8
5.5 V
16.4
7.9
6.22
12.6
0.305
3.45
65.7
5.6 V
15.6
8.0
5.99
3.50
62.1
5.7 V
15.0
8.2
5.55
3.55
58.9
5.8 V
14.3
8.4
5.14
3.60
55.9
5.9 V
13.7
8.6
4.76
3.65
53.2
6.0 V
13.1
8.8
4.40
Copyright 2004–2008, Texas Instruments Incorporated
11
Product Folder Link(s): PTN78020W PTN78020H
相关PDF资料
PDF描述
PTN78020HAS 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
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