參數資料
型號： TS2940CP2.5
廠商： Taiwan Semiconductor Co., Ltd.
元件分類： 基準電壓源/電流源
英文描述： 5.0 AMP POSITIVE VOLTAGE REGULATOR
中文描述： 5.0放大器正電壓穩(wěn)壓器
文件頁數： 4/6頁
文件大小： 139K
代理商： TS2940CP2.5
TS2940
4-6
2003/12 rev. B
Application Information (continued)
The next parameter which must be calculated is the
maximum allowable temperature rise, T
R
(max). this is
calculated by the using to formula:
T
R
(max) = T
J
(max) – T
A
(max)
Where: T
J
(max) is the maximum allowable junction
temperature, which is 125
o
C for commercial
grade parts.
T
A
(max) is the maximum ambient temperature
which will be encountered in the application.
Using the calculated values for T
R
(max) and P
D
, the
maximum allowable value for the junction to ambient
thermal resistance,
θ
ja, can now be found:
θ
ja = T
R
(max) / P
D
IMPORTANT: if the maximum allowable value for is
found to be
≥
60
o
C/W for the TO-220 package,
≥
80
o
C/W
for the TO-263 package,
≥
150
o
C/W for the TO-252
package, or
≥
170
o
C/W for the SOT-223 package, no
heatsink is needed since the package alone will dissipate
enough heat to satisfy these requirements. If the
calculated value for
θ
ja falls below these limits, a
heatsink is required.
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參數描述
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TS2940CP33 功能描述:低壓差穩(wěn)壓器 - LDO 1A Ultra LDO 3.3v Vltg Reg RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
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