参数资料
型号: NCV8508D2T50G
厂商: ON Semiconductor
文件页数: 15/26页
文件大小: 0K
描述: IC REG LDO 5V D2PAK-7
产品变化通告: Product Discontinuance Notice 25/Mar/2011
标准包装: 50
稳压器拓扑结构: 正,固定式
输出电压: 5V
输入电压: 最高 45 V
电压 - 压降(标准): 0.45V @ 150mA
稳压器数量: 1
电流 - 限制(最小): 250mA
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: TO-263-8,D²Pak(7 引线+接片),TO-263CA
供应商设备封装: D2PAK-7
包装: 管件
NCV8508
Table 2. D 2 PAK 7 ? Lead Thermal RC Network Models
118 mm 2
626 mm 2
118 mm 2
626 mm 2
Cu Area
Cauer Network
Foster Network
C’s
C’s
Units
Tau
Tau
units
1
2
3
4
5
6
7
8
9
10
1.45E ? 06
5.55E ? 06
1.57E ? 05
5.11E ? 05
3.48E ? 04
1.07E ? 02
2.65E ? 02
0.524
0.490
0.843
1.45E ? 06
5.58E ? 06
1.59E ? 05
5.22E ? 05
5.94E ? 04
6.62E ? 02
1.55E ? 01
0.413
2.441
0.410
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
1.00E ? 07
1.00E ? 06
1.00E ? 05
0.000
0.001
0.006
0.020
1.43
6.52
104.512
1.00E ? 07
1.00E ? 06
1.00E ? 05
0.000
0.002
0.029
0.080
2.63
3.6
95.974
sec
sec
sec
sec
sec
sec
sec
sec
sec
sec
R’s
R’s
R’s
R’s
1
2
3
4
5
6
7
8
9
10
0.089
0.210
0.637
1.899
1.883
1.398
0.315
14.348
5.621
51.986
0.089
0.208
0.624
2.107
2.454
0.952
0.360
7.042
20.823
9.649
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
5.25E ? 02
1.14E ? 01
3.59E ? 01
1.5
2.6
0.1
1.7
0.1
7.2
64.8
5.25E ? 02
1.14E ? 01
3.59E ? 01
1.9
3.0
0.1
0.9
0.1
4.6
33.3
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
NOTE:
Bold face items in the Cauer network above, represent the package without the external thermal system. The Bold face items in
the Foster network are computed by the square root of time constant R(t) = 166 * sqrt(time(sec)). The constant is derived based
on the active area of the device with silicon and epoxy at the interface of the heat generation.
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
R(t) +
n
i + 1
1 ? e ? t taui
http://onsemi.com
15
相关PDF资料
PDF描述
GEM24DRSI CONN EDGECARD 48POS DIP .156 SLD
HBC49DRAH-S734 CONN EDGECARD 98POS .100 R/A PCB
TRJE337M010RRJ CAP TANT 330UF 10V 20% 2917
ACC35DRXS-S734 CONN EDGECARD 70POS DIP .100 SLD
TAJV687M006RNJ CAP TANT 680UF 6.3V 20% 2924
相关代理商/技术参数
参数描述
NCV8508D2T50R4 功能描述:低压差稳压器 - LDO 5V 250mA w/WatchDog RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压(最大值):307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20
NCV8508D2T50R4G 功能描述:低压差稳压器 - LDO ANA 5.0V LDO WD REG RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压(最大值):307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20
NCV8508DW50 功能描述:低压差稳压器 - LDO 5V 250mA w/WatchDog RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压(最大值):307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20
NCV8508DW50G 功能描述:低压差稳压器 - LDO 5V 250mA w/WatchDog RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压(最大值):307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20
NCV8508DW50R2 功能描述:低压差稳压器 - LDO 5V 250mA w/WatchDog RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压(最大值):307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20