Product Summary

The LM1085IS-3.3 is a 3A low dropout positive voltage regulator with a maximum dropout of 1.5V at 3A of load current. It has the same pin-out as National Semiconductor’s industry standard LM317.The LM1085 is available in an adjustable version, which can set the output voltage with only two external resistors. It is also available in three fixed voltages: 3.3V, 5.0V and 12.0V.The fixed versions integrate the adjust resistors.The LM1085 circuit includes a zener trimmed bandgap ref-erence, current limiting and thermal shutdown.The LM1085 series is available in TO-220 and TO-263 pack-ages. Refer to the LM1084 for the 5A version, and the LM1086 for the 1.5A version.

Parametrics

LM1085IS-3.3 absolute maximum ratings: (1)Maximum Input to Output Voltage Differential:27V; (2)Power Dissipation (Note 2):Internally Limited; (3)Junction Temperature (TJ)(Note 3) : 150°C; (4)Storage Temperature Range -65°C to 150°C; (5)Lead Temperature :260°C, to 10 sec; (6)ESD Tolerance (Note 4) : 2000V.

Features

LM1085IS-3.3 features: (1)Available in 3.3V, 5.0V, 12V and Adjustable Versions; (2)Current Limiting and Thermal Protection; (3)Output Current :3A; (4)Line Regulation :0.015% (typical); (5)Load Regulation :0.1% (typical).

Diagrams

LM1085IS-3.3 functional diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM1085IS-3.3
LM1085IS-3.3
National Semiconductor (TI)
Low Dropout (LDO) Regulators
Data Sheet
0-405: $0.95
405-540: $0.83
540-1035: $0.64
1035-5040: $0.62
LM1085IS-3.3/NOPB
LM1085IS-3.3/NOPB
National Semiconductor (TI)
Low Dropout (LDO) Regulators 3A LDO POS REG
Data Sheet
0-1: $1.47
1-25: $1.19
25-100: $1.07
100-250: $0.95