The LM1085 is a regulator with a maximum dropout of 1.5 V at 3 A of load current. It has the same pin-out as TI?s industry standard LM317.
Two resistors are required to set the output voltage of the adjustable output voltage version of the LM1085. Fixed output voltage versions integrate the adjust resistors.
The LM1085 circuit includes a zener trimmed bandgap reference, current limiting and thermal shutdown.
Features:-
Available in 3.3-V, 5.0-V, 12-V and Adjustable Versions
Current Limiting and Thermal Protection
Output Current 3 A
Line Regulation 0.015% (typical)
Load Regulation 0.1% (typical)
Specification:-
Parameter
Specification
Part number
LM1085
Output options
Adjustable Output, Fixed Output
Iout (Max) (A)
3
Vin (Max) (V)
29
Vin (Min) (V)
2.6
Vout (Max) (V)
27.5
Vout (Min) (V)
1.25
Fixed output options (V)
3.3, 5, 12
Package Group
DDPAK/TO-263 | 3, TO-220 | 3
Regulated outputs (#)
1
Operating temperature range ( C )
-40 to 125
Thermal resistance ?JA (?C/W)
23
Noise (uVrms)
38
Rating
See Data Sheet
PSRR @ 100 KHz (dB)
30
Accuracy (%)
4
Dropout voltage (Vdo) (Typ) (mV)
1300
Iq (Typ) (mA)
5
Package size: mm2:W x L (PKG)
3DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 3)
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