LM1085 3A Fixed / Adjustable Output Linear Regulator | TI.com

LM1085 (ACTIVE)

3A Fixed / Adjustable Output Linear Regulator

3A Fixed / Adjustable Output Linear Regulator - LM1085
 

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Description

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.

Refer to the LM1084 for the 5A version, and the LM1086 for the 1.5A version.

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)

View more

Parametrics Compare all products in Linear regulators (LDO)

 
Output Options
Iout (Max) (A)
Vin (Max) (V)
Vin (Min) (V)
Vout (Max) (V)
Vout (Min) (V)
Fixed Output Options (V)
Package Group
Features
Regulated Outputs (#)
Operating Temperature Range (C)
Thermal Resistance θJA (°C/W)
Noise (uVrms)
Approx. Price (US$)
Rating
Output Capacitor Type
PSRR @ 100KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package Size: mm2:W x L (PKG)
LM1085 LM1084 LM1086 LM323-N
Adjustable Output
Fixed Output    
Adjustable Output
Fixed Output    
Adjustable Output
Fixed Output    
Fixed Output    
3     5.5     1.5     3    
29     29     29     20    
2.6     2.6     2.6     7.5    
27.5     27.5     27.5     5    
1.25     1.25     1.25     5    
3.3
5
12    
3.3
5    
1.8
2.5
3.3
5    
5    
DDPAK/TO-263 | 3
TO-220 | 3    
DDPAK/TO-263 | 3
TO-220 | 3    
DDPAK/TO-263 | 3
TO-220 | 3
WSON | 8    
TO-3 | 2    
N/A     N/A     N/A     N/A    
1     1     1     1    
-40 to 125     -40 to 125     0 to 125
-40 to 125    
0 to 125    
23     23     23     35    
38     38     38     40    
0.74 | 1ku     1.00 | 1ku     0.72 | 1ku     26.62 | 1ku    
Catalog     Catalog     Catalog     Catalog    
Non-Ceramic     Non-Ceramic     Non-Ceramic     Non-Ceramic    
30     30     30     55    
4     1.5     2     2    
1300     1300     1300     1900    
5     5     2     12    
3DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 3)
See datasheet (TO-220)    
3DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 3)
See datasheet (TO-220)    
3DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 3)
See datasheet (TO-220)
See datasheet (WSON)    
2TO-3: 969 mm2: 24.89 x 38.94 (TO-3 | 2)    

WEBENCH® Designer LM1085

  Min   Max Range
Vin  V 13.5 to 25.0V
Product Option
Vout  V
Iout  A ≤ 3.0A
Ambient Temp  °C -40.0 to 125.0°C