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LM1084 データシート(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
部品番号 LM1084
部品情報  5A Low Dropout Positive Regulators
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メーカー  NSC [National Semiconductor (TI)]
ホームページ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM1084 データシート(HTML) 4 Page - National Semiconductor (TI)

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Electrical Characteristics (Continued)
Typicals and limits appearing in normal type apply for T
J = 25˚C. Limits appearing in Boldface type apply over the entire junc-
tion temperature range for operation.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
I
LIMIT
Current Limit
LM1084-ADJ
V
IN−VOUT =5V
V
IN−VOUT = 25V
5.5
0.3
8.0
0.6
A
A
LM1084-3.3
V
IN =8V
5.5
8.0
A
LM1084-5.0
V
IN = 10V
5.5
8.0
A
LM1084-12
V
IN = 17V
5.5
8.0
A
Minimum Load
Current (Note 10)
LM1084-ADJ
V
IN −VOUT = 25V
5
10.0
mA
Quiescent Current
LM1084-3.3
V
IN = 18V
5.0
10.0
mA
LM1084-5.0
V
IN
≤ 20V
5.0
10.0
mA
LM1084-12
V
IN
≤ 25V
5.0
10.0
mA
Thermal Regulation
T
A = 25˚C, 30ms Pulse
0.003
0.015
%/W
Ripple Rejection
f
RIPPLE = 120Hz, = COUT = 25µF Tantalum,
I
OUT =5A
60
75
dB
LM1084-ADJ, C
ADJ, = 25µF, (VIN−VO)=3V
LM1084-3.3, V
IN = 6.3V
60
72
dB
LM1084-5.0, V
IN =8V
60
68
dB
LM1084-12 V
IN = 15V
54
60
dB
Adjust Pin Current
LM1084
55
120
µA
Adjust Pin Current
Change
10mA
≤ I
OUT
≤ I
FULL LOAD,
1.5V
≤ V
IN−VOUT
≤ 25V
0.2
5
µA
Temperature
Stability
0.5
%
Long Term Stability
T
A =125˚C, 1000Hrs
0.3
1.0
%
RMS Output Noise
(% of V
OUT)
10Hz
≤ f≤ 10kHz
0.003
%
Thermal Resistance
Junction-to-Case
3-Lead TO-263: Control Section/Output Section
3-Lead TO-220: Control Section/Output Section
0.65/2.7
0.65/2.7
˚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: Power dissipation is kept in a safe range by current limiting circuitry. Refer to Overload Recovery in Application Notes.
Note 3: The maximum power dissipation is a function of TJ(max) , θJA, and TA. The maximum allowable power dissipation at any ambient temperature
is PD =(TJ(max)–T A)/θJA. All numbers apply for packages soldered directly into a PC board. Refer to Thermal Considerations in the Application Notes.
Note 4: For testing purposes, ESD was applied using human body model, 1.5k
Ω in series with 100pF.
Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: IFULLLOAD is defined in the current limit curves. The IFULLLOAD Curve defines the current limit as a function of input-to-output voltage. Note that 30W power
dissipation for the LM1084 is only achievable over a limited range of input-to-output voltage.
Note 8: Load and line regulation are measured at constant junction temperature, and are guaranteed up to the maximum power dissipation of 30W. Power
dissipation is determined by the input/output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output
range.
Note 9: Dropout voltage is specified over the full output current range of the device.
Note 10: The minimum output current required to maintain regulation.
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4


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