LM1085 3-A, 29-V, linear voltage regulator | TI.com

LM1085
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3-A, 29-V, linear voltage regulator

3-A, 29-V, linear voltage regulator - LM1085
Datasheet
LM1085 3-A Low Dropout Positive Regulators datasheet (Rev. H)
 

Recommended alternative parts

  • TPS7A84A  -  TPS7A84A is a 3-A Ldo regulator with high acuracy (0.75%) and very low noise (4.4μVRMS)

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)

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

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Parametrics

Compare all products in Linear regulators (LDO) Email Download to Excel
Part number Order 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 PSRR @ 100 KHz (dB) Accuracy (%) Dropout voltage (Vdo) (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
LM1085 Order now Adjustable Output
Fixed Output    		 3     29     2.6     27.5     1.25     3.3
5
12    		 DDPAK/TO-263 | 3
TO-220 | 3    		     1     -40 to 125     23     38     0.60 | 1ku     Catalog     30     4     1300     5     3DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 3)
3TO-220: 47 mm2: 4.58 x 10.16 (TO-220 | 3)    
LM1084 Order now Adjustable Output
Fixed Output    		 5.5     29     2.6     27.5     1.25     3.3
5    		 DDPAK/TO-263 | 3
TO-220 | 3    		     1     -40 to 125     23     38     0.88 | 1ku     Catalog     30     1.5     1300     5     3DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 3)
3TO-220: 47 mm2: 4.58 x 10.16 (TO-220 | 3)    
LM1086 Order now Adjustable Output
Fixed Output    		 1.5     29     2.6     27.5     1.25     1.8
2.5
3.3
5    		 DDPAK/TO-263 | 3
TO-220 | 3
WSON | 8    		     1     -40 to 125
0 to 125    		 23     38     0.63 | 1ku     Catalog     30     2     1300     2     3DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 3)
3TO-220: 47 mm2: 4.58 x 10.16 (TO-220 | 3)
8WSON: 16 mm2: 4 x 4 (WSON | 8)    
LM323-N Samples not available Fixed Output     3     20     7.5     5     5     5     TO-3 | 2         1     0 to 125     35     40     36.97 | 1ku     Catalog     55     2     1900     12     2TO-3: 969 mm2: 24.89 x 38.94 (TO-3 | 2)