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| 型號(hào)： | LM1085 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 3A Low Dropout Positive Regulators |
| 中文描述： | 第3A低壓差穩(wěn)壓器正 |
| 文件頁(yè)數(shù)： | 4/13頁(yè) |
| 文件大?。?/td> | 744K |
| 代理商： | LM1085 |
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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.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
I
LIMIT
Current Limit
LM1085-ADJ
V
IN
V
OUT
= 5V
V
IN
V
OUT
= 25V
LM1085-3.3
V
IN
= 8V
LM1085-5.0
V
IN
= 10V
LM1085-12
V
IN
= 17V
LM1085-ADJ
V
IN
V
OUT
= 25V
LM1085-3.3
V
IN
≤
18V
LM1085-5.0
V
IN
≤
20V
LM1085-12
V
IN
≤
25V
T
A
= 25C, 30ms Pulse
f
RIPPLE
= 120Hz, C
OUT
= 25μF Tantalum, I
OUT
= 3A
LM1085-ADJ, C
ADJ
= 25μF, (V
IN
V
O
) = 3V
LM1085-3.3, V
IN
= 6.3V
LM1085-5.0, V
IN
= 8V
LM1085-12 V
IN
= 15V
LM1085
10mA
≤
I
OUT
≤
I
FULL LOAD
, 1.5V
≤
V
IN
V
OUT
≤
25V
3.2
0.2
5.5
0.5
A
A
3.2
5.5
A
3.2
5.5
A
3.2
5.5
A
Minimum Load
Current (Note 10)
Quiescent Current
5.0
10.0
mA
5.0
10.0
mA
5.0
10.0
mA
5.0
.004
10.0
0.02
mA
%/W
Thermal Regulation
Ripple Rejection
60
60
60
54
75
72
68
60
55
dB
dB
dB
dB
μA
Adjust Pin Current
Adjust Pin Current
Change
Temperature
Stability
Long Term Stability
RMS Output Noise
(% of V
OUT
)
Thermal Resistance
Junction-to-Case
120
0.2
0.5
5
μA
%
T
A
=125C, 1000Hrs
10Hz
≤
f
≤
10kHz
0.3
0.003
1.0
%
%
3-Lead TO-263: Control Section/Output Section
3-Lead TO-220: Control Section/Output Section
0.7/3.0
0.7/3.0
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 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. Refer to Thermal Considerations in the Application Notes.
Note 4:
For testing purposes, ESD was applied using human body model, 1.5k
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:
I
is defined in the current limit curves. The I
Curve defines the current limit as a function of input-to-output voltage. Note that 30W power
dissipation for the LM1085 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.
L
www.national.com
4
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| LM1086CS-ADJ | 1.5A Low Dropout Positive Regulators |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM1085-05-220M | 制造商:SEME-LAB 制造商全稱:Seme LAB 功能描述:LOW DROPOUT 3 AMP POSITIVE |
| LM1085G | 制造商:SEME-LAB 制造商全稱:Seme LAB 功能描述:3 AMP POSITIVE VOLTAGE REGULATOR |
| LM1085IG | 制造商:SEME-LAB 制造商全稱:Seme LAB 功能描述:3 AMP POSITIVE VOLTAGE REGULATOR |
| LM1085IS-12 | 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 |
| LM1085IS-12/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO 3A LDO POS 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(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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