参数资料
型号: PT4687N
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源模块
英文描述: 2-OUTPUT DC-DC REG PWR SUPPLY MODULE
封装: SIP-26
文件页数: 5/16页
文件大小: 292K
代理商: PT4687N
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes continued
5.5
5.0k
5.4
11.2k
5.3
21.6k
5.2
42.4k
5.1
105.0k
5.0
4.9
(99.8)k
4.8
(37.4)k
4.7
(16.6)k
4.6
(6.2)k
4.5
(0.0)
R1/R3 = (Blue), R2/R4 = Black
Table 2A; ADJUSTMENT RESISTOR VALUES, Vo1
24V Bus Pt.# PT4681/7
PT4682/3/5
PT4688
PT4686
48V Bus Pt.# PT4661/7
PT4662/3/5
PT4668
PT4666
Adj. Resistor
(R1)/R2
Vo(nom)
5.0V
3.3V
2.5V
Va(req’d)
Table 1; ADJUSTMENT RANGE AND FORMULA PARAMETERS
Vo1 Bus
Vo2 Bus (2)
24V Bus Pt.#
PT4681/7
PT4682/3/5
PT4688
PT4686
PT4681
PT4682
PT4683/6/7
PT4685
PT4688
48V Bus Pt.#
PT4661/7
PT4662/3/5
PT4668
PT4666
PT4661
PT4662
PT4663/6/7
PT4665
PT4668
Adj. Resistor
(R1)/R2
(R3)/R4
Vo(nom)
5.0V
3.3V
2.5V
3.3V
2.5V
1.8V
1.5V
1.2V
Va(min)
4.5V
2.97V
2.25V
2.97V
2.25V
1.62V
1.35
1.08
Va(max)
5.5V
3.63V
2.75V
3.63V
2.75V
1.98V
1.65
1.32
Vr
2.5V
1.65V
2.5V
1.25
1.5V
TBD
0.6V
Ko (Vk
)
1.248
8.234
10.96
6.24
1.8
2.0
1.9
TBD
0.726
Rs (k
)
20.0
4.99
20.0
4.99
3.32
TBD
4.22
PT4660 & PT4680 Series
3.6
7.4k
31.5k
3.54
14.3k
40.7k
3.48
25.7k
55.9k
3.42
48.6k
86.3k
3.36
117.0k
178.0k
3.3
3.24
(112.0k
)
(49.1k
)
3.18
(43.6k
)
(19.9k
)
3.12
(20.8k
)
(10.1k
)
3.06
(9.3k
)
(5.2k
)
3.0
(2.5k
)
(2.3k
)
1.95
9.4k
1.9
15.7k
1.85
34.7k
1.8
1.75
(3.0)k
1.7
1.65
TBD
1.6
TBD
1.55
TBD
1.5
1.45
(TBD)
1.4
(TBD)
1.35
(TBD)
1.3
3.0k
1.275
5.5k
1.25
10.3k
1.225
24.8k
1.2
1.175
(23.6)k
1.15
(9.1)k
1.125
(4.3)k
1.1
(1.8)k
Table 2B; ADJUSTMENT RESISTOR VALUES, Vo2
24V Bus Pt.#
PT4681
PT4682
PT4683/6/7
PT4685
PT4688
48V Bus Pt.#
PT4661
PT4662
PT4663/6/7
PT4665
PT4668
Adj. Resistor
(R3)/R4
Vo(nom)
3.3V
2.5V
1.8V
1.5V
1.2V
Va(req’d)
3.6
1.0k
3.54
2.5k
3.48
5.0k
3.42
10.0k
3.36
25.0k
3.3
3.24
(29.8)k
3.18
(11.8)k
3.12
(5.8)k
3.06
(2.8)k
3.0
(1.0)k
2.75
4.7k
2.7
6.7k
2.65
10.0k
2.6
16.7k
2.55
36.7k
2.5
2.45
(22.0)k
2.4
(8.7)k
2.35
(4.2)k
2.3
(2.0)k
2.25
(0.7)k
R1/R3 = (Blue), R2/R4 = Black
2.75
5.0k
2.7
11.2k
2.65
21.6k
2.6
42.4k
2.55
105.0k
2.5
2.45
(99.8k
)
2.4
(37.4k
)
2.35
(16.6k
)
2.3
(6.2k
)
2.25
(0.0k
)
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