參數(shù)資料
型號(hào): PTN78020HAZ
廠商: TEXAS INSTRUMENTS INC
元件分類(lèi): 電源模塊
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封裝: ROHS COMPLIANT, DIP-7
文件頁(yè)數(shù): 3/26頁(yè)
文件大?。?/td> 669K
代理商: PTN78020HAZ
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
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