IC REG POSITIVE 3A LDO TO-263

 

LM1085IS-ADJ/NOPB

Manufacturer Part NumberLM1085IS-ADJ/NOPB
DescriptionIC REG POSITIVE 3A LDO TO-263
ManufacturerNational Semiconductor
TypeVoltage Regulator
LM1085IS-ADJ/NOPB datasheets

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Specifications of LM1085IS-ADJ/NOPB

Regulator TopologyPositive AdjustableVoltage - Output1.2 ~ 15 V
Voltage - Dropout (typical)1.3V @ 3ANumber Of Regulators1
Current - Output3ACurrent - Limit (min)3.2A
Operating Temperature-40°C ~ 125°CMounting TypeSurface Mount
Package / CaseTO-263-3, D²Pak (3 leads + Tab), TO-263AACurrent, Output3 A
Current, Supply5 mAPackage TypeTO-263
Regulation, Line0.035 %Regulation, Load0.2 %
Regulator TypeLow DropoutResistance, Thermal, Junction To Case0.7 °C/W (Control Section), 3 °C/W (Output Section)
Temperature, Operating, Range-40 to +125 °CVoltage, Dropout1.3 V
Voltage, Input29 VVoltage, Noise0.003 %
Number Of Outputs1PolarityPositive
Input Voltage Max29 VOutput Voltage3.3 V, 5 V, 12 V
Output TypeAdjustableDropout Voltage (max)1.5 V At 3 A
Output Current3 ALine Regulation0.2 %
Load Regulation0.3 %Maximum Operating Temperature+ 125 C
Mounting StyleSMD/SMTMinimum Operating Temperature- 40 C
Reference Voltage1.262 VLead Free Status / RoHS StatusLead free / RoHS Compliant
Voltage - Input-Other names*LM1085IS-ADJ
*LM1085IS-ADJ/NOPB
LM1085IS-ADJ
show all specifications
LM1085IT-ADJNOPB PDF datasheetLM1085IS-3.3NOPB PDF datasheet #2
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Electrical Characteristics
Typicals and limits appearing in normal type apply for T
tion temperature range for operation.
Symbol
Parameter
I
Current Limit
LM1085-ADJ
LIMIT
V
−V
IN
V
−V
IN
LM1085-3.3
V
IN
LM1085-5.0
V
IN
LM1085-12
V
IN
Minimum Load
LM1085-ADJ
Current (Note 10)
V
IN
Quiescent Current
LM1085-3.3
V
IN
LM1085-5.0
V
IN
LM1085-12
V
IN
Thermal Regulation
T
= 25˚C, 30ms Pulse
A
Ripple Rejection
f
RIPPLE
LM1085-ADJ, C
LM1085-3.3, V
LM1085-5.0, V
LM1085-12 V
Adjust Pin Current
LM1085
10mA ≤ I
Adjust Pin Current
Change
Temperature
Stability
Long Term Stability
T
=125˚C, 1000Hrs
A
10Hz ≤ f≤ 10kHz
RMS Output Noise
(% of V
)
OUT
Thermal Resistance
3-Lead TO-263: Control Section/Output Section
Junction-to-Case
3-Lead TO-220: Control Section/Output Section
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
P
= (T
–T
)/θ
. All numbers apply for packages soldered directly into a PC board. Refer to Thermal Considerations in the Application Notes.
D
J(max)
A
JA
Note 4: For testing purposes, ESD was applied using human body model, 1.5kΩ 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
FULL LOAD
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.
www.national.com
(Continued)
= 25˚C. Limits appearing in Boldface type apply over the entire junc-
J
Conditions
= 5V
OUT
= 25V
OUT
= 8V
= 10V
= 17V
−V
= 25V
OUT
≤ 18V
≤ 20V
≤ 25V
= 120Hz, C
= 25µF Tantalum, I
OUT
OUT
= 25µF, (V
−V
) = 3V
ADJ
IN
O
= 6.3V
IN
= 8V
IN
= 15V
IN
≤ I
, 1.5V ≤ V
−V
OUT
FULL LOAD
IN
OUT
, θ
, and T
. The maximum allowable power dissipation at any ambient temperature is
J(max)
JA
A
Curve defines the current limit as a function of input-to-output voltage. Note that 30W power
FULL LOAD
4
Min
Typ
Max
(Note 6)
(Note 5)
(Note 6)
3.2
5.5
0.2
0.5
3.2
5.5
3.2
5.5
3.2
5.5
5.0
10.0
5.0
10.0
5.0
10.0
5.0
10.0
.004
0.02
= 3A
60
75
60
72
60
68
54
60
55
120
≤ 25V
0.2
5
0.5
0.3
1.0
0.003
0.7/3.0
0.7/3.0
Units
A
A
A
A
A
mA
mA
mA
mA
%/W
dB
dB
dB
dB
µA
µA
%
%
%
˚C/W
˚C/W

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