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參數(shù)資料
| 型號(hào)： | LM3490IM5X-15 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF |
| 中文描述： | 15 V FIXED POSITIVE LDO REGULATOR, 1.2 V DROPOUT, PDSO5 |
| 封裝： | PLASTIC, SOT-23, 5 PIN |
| 文件頁數(shù)： | 4/10頁 |
| 文件大小： | 291K |
| 代理商： | LM3490IM5X-15 |
LM3490-12, LM3490-15
V
= V
+ 1.5V unless otherwise noted. Typicals and limits appearing in normal type apply for T
= T
= 25C. Limits ap-
pearing in boldface type apply over the entire junction temperature range for operation, 40 to +125C. (Notes 9, 10, 11)
Nominal Output Voltage (V
NOM
)
Symbol
Parameter
Conditions
V
OUT
Output Voltage
1 mA
≤
I
OUT
≤
100 mA
12V
15V
Units
Typical
12.00
Limit
Typical
15.00
Limit
11.52
11.40
12.48
12.60
14.40
14.25
15.60
15.75
V
V(min)
V(min)
V(max)
V(max)
mV
mV(max)
mV
mV(max)
V
OUT
Line Regulation
V
NOM
+ 1.5V
≤
V
IN
≤
30V,
I
OUT
= 1 mA
10 mA
≤
I
OUT
≤
100 mA
14
40
16
40
V
OUT
Load Regulation
36
60
45
75
I
GND
Ground Pin
Current
V
NOM
+ 1.5V
≤
V
IN
≤
30V,
No Load
V
ON/OFF
= 5V
2
2
mA
4
4
mA(max)
μA
μA(max)
V
V(max)
V(max)
V
V(max)
V(max)
μV
rms
V
ON/OFF
= 0V
0.1
0.1
5
5
V
IN
-
V
OUT
Dropout Voltage
I
OUT
= 10 mA
0.7
0.9
1.0
0.7
0.9
1.0
I
OUT
= 100 mA
0.9
1.1
1.2
0.9
1.1
1.2
e
n
Output Noise
Voltage
Maximum Low
Level Input
Voltage at
ON/OFF
Minimum High
Level Input
Voltage at
ON/OFF
V
IN
= 10V,
Bandwidth: 10 Hz to 100 kHz
360
450
V
IL
0.2
0.2
V(max)
V
IH
2.0
2.0
V(min)
I
IL
I
IH
V
ON/OFF
= 0V
V
ON/OFF
= 5V
1
1
μA(max)
μA
μA(max)
1
1
20
20
Note 1:
The package code MA05B is internal to National Semiconductor Corporation and indicates a specific version of the SOT-23 package and associated me-
chanical drawings.
Note 2:
The suffix “I” indicates the junction temperature range for operation is the industrial temperature range, 40 to +125C. The suffix “M5” indicates the die is
packaged in the 5-lead SOT-23 package. The suffix “X” indicates the devices will be supplied in blocks of 3k units as opposed to blocks of 250 units.
Note 3:
Because the entire part number does not fit on the SOT-23 package, the SOT-23 package is marked with this code instead of the part number.
Note 4:
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device
is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical
Characteristics tables.
Note 5:
The Absolute Maximum power dissipation depends on the ambient temperature and can be calculated using P = (T
- T
)/
θ
where T
is the junction tem-
perature, T
is the ambient temperature, and
θ
JA
is the junction-to-ambient thermal resistance. The 400 mW rating results from substituting the Absolute Maximum
junction temperature, 150C, for T
, 50C for T
, and 250C/W for
θ
. More power can be safely dissipated at lower ambient temperatures. Less power can be safely
dissipated at higher ambient temperatures. The Absolute Maximum power dissipation can be increased by 4 mW for each C below 50C ambient. It must be derated
by 4 mW for each C above 50C ambient. A
θ
of 250C/W represents the worst-case condition of no heat sinking of the 5-lead plastic SOT-23 package. Heat sink-
ing enables the safe dissipation of more power. The LM3490 actively limits its junction temperature to about 150C.
Note 6:
Times shown are dwell times. Temperatures shown are dwell temperatures. For detailed information on soldering plastic small-outline packages, refer to the
Packaging Databook available from National Semiconductor Corporation.
Note 7:
For testing purposes, ESD was applied using the human-body model, a 100 pF capacitor discharged through a 1.5 k
resistor.
Note 8:
As with the Absolute Maximum power dissipation, the maximum power dissipation for operation depends on the ambient temperature. The 300 mW rating
appearing under Operating Ratings results from substituting the maximum junction temperature for operation, 125C, for T
, 50C for T
, and 250C/W for
θ
in
P=(T
T
)/
θ
. More power can be dissipated at lower ambient temperatures. Less power can be dissipated at higher ambient temperatures. The maximum power
dissipation for operation appearing under Operating Ratings can be increased by 4 mW for each C below 50C ambient. It must be derated by 4 mW for each C
above 50C ambient. A
θ
of 250C/W represents the worst-case condition of no heat sinking of the 5-lead plastic SOT-23 package. Heat sinking enables the dis-
sipation of more power during operation.
www.national.com
4
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| LM3490IM5X-3.3 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF |
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| LM3490IM5X-5.0 | 功能描述:低壓差穩(wěn)壓器 - LDO 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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