LM1085IS-12/NOPB National Semiconductor, LM1085IS-12/NOPB Datasheet - Page 4

• Manufacturer Part Number: LM1085IS-12/NOPB
• Description: IC REG LDO POS 12V 3A TO-263-3
• Manufacturer: National Semiconductor

Specifications of LM1085IS-12/NOPB

• Regulator Topology: Positive Fixed
• Voltage - Output: 12V
• Voltage - Dropout (typical): 1.3V @ 3A
• Number Of Regulators: 1
• Current - Output: 3A
• Current - Limit (min): 3.2A
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: TO-263-3, D²Pak (3 leads + Tab), TO-263AA
• Primary Input Voltage: 25V
• Dropout Voltage Vdo: 1.3V
• No. Of Pins: 3
• Output Current: 3A
• Operating Temperature Range: -40°C To +125°C
• Msl: MSL 3 - 168 Hours
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Input Voltage Primary Max: 25V
• Output Voltage Fixed: 12V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Input: -
• Other names: *LM1085IS-12; *LM1085IS-12/NOPB; LM1085IS-12

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I
LIMIT
Symbol
Electrical Characteristics
Typicals and limits appearing in normal type apply for T
tion temperature range for operation.
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
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
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.
D
= (T
J(max)
FULL LOAD
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
–T
A
)/θ
Parameter
is defined in the current limit curves. The I
JA
OUT
. All numbers apply for packages soldered directly into a PC board. Refer to Thermal Considerations in the Application Notes.
)
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
LM1085-ADJ, C
LM1085-3.3, V
LM1085-5.0, V
LM1085-12 V
LM1085
10mA ≤ I
T
10Hz ≤ f≤ 10kHz
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
≤ 18V
≤ 20V
≤ 25V
OUT
OUT
OUT
= 120Hz, C
OUT
= 5V
= 25V
= 25V
(Continued)
IN
≤ I
IN
IN
FULL LOAD
ADJ
= 15V
FULL LOAD
J(max)
= 6.3V
= 8V
OUT
= 25µF, (V
Conditions
, θ
J
= 25µF Tantalum, I
JA
Curve defines the current limit as a function of input-to-output voltage. Note that 30W power
= 25˚C. Limits appearing in Boldface type apply over the entire junc-
, and T
, 1.5V ≤ V
4
IN
A
−V
. The maximum allowable power dissipation at any ambient temperature is
O
IN
) = 3V
−V
OUT
OUT
≤ 25V
= 3A
(Note 6)
Min
3.2
0.2
3.2
3.2
3.2
60
60
60
54
(Note 5)
0.003
.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
(Note 6)
0.7/3.0
0.7/3.0
Max
10.0
10.0
10.0
10.0
0.02
120
1.0
5
Units
˚C/W
˚C/W
%/W
mA
mA
mA
mA
dB
dB
dB
dB
µA
µA
%
%
%
A
A
A
A
A