参数资料
型号: NCV4276ADTADJRKG
厂商: ON Semiconductor
文件页数: 19/25页
文件大小: 0K
描述: IC REG LDO ADJ .4A DPAK-5
产品变化通告: NCV42xx Obsolescence 27/Apr/2011
标准包装: 2,500
稳压器拓扑结构: 正,可调式
输出电压: 2.5 V ~ 20 V
输入电压: 4.5 V ~ 40 V
电压 - 压降(标准): 0.25V @ 250mA
稳压器数量: 1
电流 - 输出: 400mA
电流 - 限制(最小): 400mA
工作温度: -40°C ~ 150°C
安装类型: 表面贴装
封装/外壳: TO-252-5,DPak(4 引线 + 接片),TO-252AD
供应商设备封装: DPAK-5
包装: 带卷 (TR)
NCV4276, NCV4276A
Table 2. D 2 PAK 5 ? Lead Thermal RC Network Models
Drain Copper Area (1 oz thick)
241 mm 2
788 mm 2
241 mm 2
788 mm 2
(SPICE Deck Format)
Cauer Network
Foster Network
241 mm 2
653 mm 2
Units
Tau
Tau
Units
C_C1
C_C2
C_C3
C_C4
C_C5
C_C6
C_C7
C_C8
C_C9
C_C10
Junction
node1
node2
node3
node4
node5
node6
node7
node8
node9
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
1.00E ? 06
1.00E ? 05
6.00E ? 05
1.00E ? 04
2.82E ? 04
5.58E ? 03
4.25E ? 01
9.22E ? 01
1.73
7.12
1.00E ? 06
1.00E ? 05
6.00E ? 05
1.00E ? 04
2.87E ? 04
5.95E ? 03
4.61E ? 01
2.05
4.88
1.31
W ? s/C
W ? s/C
W ? s/C
W ? s/C
W ? s/C
W ? s/C
W ? s/C
W ? s/C
W ? s/C
W ? s/C
1.361E ? 08
7.411E ? 07
1.005E ? 05
3.460E ? 05
7.868E ? 04
7.431E ? 03
2.786E+00
2.014E+01
1.134E+02
1.361E ? 08
7.411E ? 07
1.007E ? 05
3.480E ? 05
8.107E ? 04
7.830E ? 03
2.012E+00
2.601E+01
1.218E+02
sec
sec
sec
sec
sec
sec
sec
sec
sec
sec
241 mm 2
653 mm 2
R’s
R’s
R_R1
R_R2
R_R3
R_R4
R_R5
R_R6
R_R7
R_R8
R_R9
R_R10
Junction
node1
node2
node3
node4
node5
node6
node7
node8
node9
node1
node2
node3
node4
node5
node6
node7
node8
node9
GND
0.015
0.08
0.4
0.2
1.85638
1.23672
9.81541
33.1868
27.0263
1.13944
0.0150
0.0800
0.4000
0.2000
1.8839
1.2272
5.3383
18.9591
13.3369
0.1191
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
0.0123
0.0585
0.0257
0.3413
1.77
1.54
4.13
6.27
60.80
0.0123
0.0585
0.0260
0.3438
1.81
1.52
3.46
5.03
29.30
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
NOTE:
Bold face items represent the package without the external thermal system.
The Cauer networks generally have physical significance and may be divided between nodes to separate thermal behavior
due to one portion of the network from another. The Foster networks, though when sorted by time constant (as above) bear
a rough correlation with the Cauer networks, are really only convenient mathematical models. Cauer networks can be easily
implemented using circuit simulating tools, whereas Foster networks may be more easily implemented using mathematical
tools (for instance, in a spreadsheet program), according to the following formula:
S Ri 1 ? e ? t taui
R(t) +
n
i + 1
http://onsemi.com
19
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