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參數資料
| 型號： | LMS8117AMPX-ADJ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 1A Low-Dropout Linear Regulator |
| 中文描述： | 1.25 V-13.8 V ADJUSTABLE POSITIVE LDO REGULATOR, 1.25 V DROPOUT, PDSO4 |
| 封裝： | SOT-223, 3 PIN |
| 文件頁數： | 4/16頁 |
| 文件大小： | 777K |
| 代理商： | LMS8117AMPX-ADJ |
Electrical Characteristics
(Continued)
Typicals and limits appearing in normal type apply for T
J
= 25C. Limits appearing in
Boldface
type apply over the entire junc-
tion temperature range for operation, 0C to 125C.
Symbol
Parameter
Conditions
Min
(Note 5)
Typ
(Note 4)
0.5
0.3
0.003
15.0
10
136
92
Max
(Note 5)
Units
Temperature Stability
Long Term Stability
RMS Output Noise
Thermal Resistance
Junction-to-Case
Thermal Resistance
Junction-to-Ambient
(No heat sink;
No air flow)
%
%
%
T
A
= 125C, 1000Hrs
(% of V
OUT
), 10Hz
≤
f
≤
10kHz
3-Lead SOT-223
3-Lead TO-252
3-Lead SOT-223
3-Lead TO-252 (Note 9)
C/W
C/W
C/W
C/W
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2:
The maximum power dissipation is a function of T
J(MAX)
,
θ
JA
, and T
A
. The maximum allowable power dissipation at any ambient temperature is
P
D
= (T
J(MAX)
–T
A
)/
θ
JA
. All numbers apply for packages soldered directly into a PC board.
Note 3:
For testing purposes, ESD was applied using human body model, 1.5k
in series with 100pF.
Note 4:
Typical Values represent the most likely parametric norm.
Note 5:
All limits are guaranteed by testing or statistical analysis.
Note 6:
Load and line regulation are measured at constant junction room temperature.
Note 7:
The dropout voltage is the input/output differential at which the circuit ceases to regulate against further reduction in input voltage. It is measured when the
output voltage has dropped 100mV from the nominal value obtained at V
IN
= V
OUT
+1.5V.
Note 8:
The minimum output current required to maintain regulation.
Note 9:
Minimum pad size of 0.038in
2
L
www.national.com
4
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