LM1085IS-3.3 National Semiconductor, LM1085IS-3.3 Datasheet - Page 4

• Manufacturer Part Number: LM1085IS-3.3
• Description: Linear Voltage Regulator IC
• Manufacturer: National Semiconductor

Specifications of LM1085IS-3.3

• No. Of Pins: 3
• Output Current: 3A
• Termination Type: SMD
• Mounting Type: Through Hole
• Voltage Regulator Type: LDO Linear
• Peak Reflow Compatible (260 C): No
• Current Rating: 3A
• Output Voltage Max: 3.3V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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I
LIMIT
Symbol
Typicals and limits appearing in normal type apply for T
tion temperature range for operation.
Electrical Characteristics
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended 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
Note 4: For testing purposes, ESD was applied using human body model, 1.5k
Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: I
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 dissipa-
tion 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.
D
= (T
J(max)
FULL LOAD
–T
Current Limit
Minimum Load
Current (Note 10)
Quiescent
Current
Thermal
Regulation
Ripple Rejection
Adjust Pin
Current
Adjust Pin
Current Change
Temperature
Stability
Long Term
Stability
RMS Output
Noise
(% of V
Thermal
Resistance
Junction-to-Case
A
)/
Parameter
is defined in the current limit curves. The I
JA
. All numbers apply for packages soldered directly into a PC board. Refer to Thermal Considerations in the Application Notes.
OUT
)
LM1085-ADJ
V
V
LM1085-3.3
V
LM1085-5.0
V
LM1085-12
V
LM1085-ADJ
V
LM1085-3.3
V
LM1085-5.0
V
LM1085-12
V
T
f
3A
LM1085-ADJ, C
LM1085-3.3, V
LM1085-5.0, V
LM1085-12 V
LM1085
10mA
T
10Hz
3-Lead TO-263: Control Section/Output Section
3-Lead TO-220: Control Section/Output Section
RIPPLE
A
A
IN
IN
IN
IN
IN
IN
IN
IN
IN
= 125˚C, 1000Hrs
−V
−V
= 25˚C, 30ms Pulse
= 8V
= 10V
= 17V
−V
OUT
OUT
18V
20V
25V
OUT
= 120Hz, C
f 10kHz
I
OUT
(Continued)
= 5V
= 25V
= 25V
IN
FULL LOAD
IN
IN
J(max)
I
ADJ
= 15V
FULL LOAD
= 8V
= 6.3V
OUT
Conditions
= 25µF, (V
,
J
Curve defines the current limit as a function of input-to-output voltage. Note that 30W power
JA
= 25˚C. Limits appearing in Boldface type apply over the entire junc-
= 25µF Tantalum, I
, and T
, 1.5V
4
A
in series with 100pF.
IN
. The maximum allowable power dissipation at any ambient temperature is
−V
V
O
IN
) = 3V
−V
OUT
OUT
25V
=
(Note
Min
3.2
0.2
3.2
3.2
3.2
60
60
60
54
6)
0.003
(Note
.004
Typ
5.5
0.5
5.5
5.5
5.5
5.0
5.0
5.0
5.0
0.2
0.5
0.3
75
72
68
60
55
5)
0.7/3.0
0.7/3.0
(Note
Max
10.0
10.0
10.0
10.0
0.02
120
1.0
6)
5
Units
˚C/W
˚C/W
%/W
mA
mA
mA
mA
dB
dB
dB
dB
µA
µA
%
%
%
A
A
A
A
A