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Power Circuits / Linear Regulator ICs / LM1085IT-3.3
Datasheets
LM1085IT-3.3 by:

IC VREG 3.3 V FIXED POSITIVE LDO REGULATOR, 1.5 V DROPOUT, PSFM3, TO-220, 3 PIN, Fixed Positive Single Output LDO Regulator

Part Details for LM1085IT-3.3 by National Semiconductor Corporation

Results Overview of LM1085IT-3.3 by National Semiconductor Corporation

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LM1085IT-3.3 Information

LM1085IT-3.3 by National Semiconductor Corporation is a Linear Regulator IC.
Linear Regulator ICs are under the broader part category of Power Circuits.

A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.

Available Datasheets

Part # Manufacturer Description Datasheet
LM1085IT-ADJ Texas Instruments 3A Fixed / Adjustable Output Linear Regulator 3-TO-220 -40 to 125
LM1085IT-5.0 Texas Instruments 3A Fixed / Adjustable Output Linear Regulator 3-TO-220
LM1085IT-ADJ/NOPB Texas Instruments 3A Fixed / Adjustable Output Linear Regulator 3-TO-220 -40 to 125

Price & Stock for LM1085IT-3.3

Part # Distributor Description Stock Price Buy
Bristol Electronics   44
RFQ

Part Details for LM1085IT-3.3

LM1085IT-3.3 CAD Models

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LM1085IT-3.3 Part Data Attributes

Parametric Data
LM1085IT-3.3 National Semiconductor Corporation
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LM1085IT-3.3 National Semiconductor Corporation IC VREG 3.3 V FIXED POSITIVE LDO REGULATOR, 1.5 V DROPOUT, PSFM3, TO-220, 3 PIN, Fixed Positive Single Output LDO Regulator
Rohs Code No
Part Life Cycle Code Transferred
Ihs Manufacturer NATIONAL SEMICONDUCTOR CORP
Package Description TO-220, SIP3,.1TB
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Adjustability FIXED
Dropout Voltage1-Max 1.5 V
Dropout Voltage1-Nom 1.3 V
Input Voltage Absolute-Max 27 V
Input Voltage-Max 15 V
Input Voltage-Min 4.8 V
JESD-30 Code R-PSFM-T3
JESD-609 Code e0
Line Regulation-Max 0.006%
Load Regulation-Max 0.02%
Moisture Sensitivity Level 1
Number of Functions 1
Number of Outputs 1
Number of Terminals 3
Operating Temperature TJ-Max 125 °C
Operating Temperature TJ-Min -40 °C
Output Current1-Max 3 A
Output Voltage1-Max 3.365 V
Output Voltage1-Min 3.235 V
Output Voltage1-Nom 3.3 V
Package Body Material PLASTIC/EPOXY
Package Code TO-220
Package Equivalence Code SIP3,.1TB
Package Shape RECTANGULAR
Package Style FLANGE MOUNT
Packing Method RAIL
Peak Reflow Temperature (Cel) 260
Qualification Status Not Qualified
Regulator Type FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Surface Mount NO
Technology BIPOLAR
Terminal Finish Tin/Lead (Sn/Pb)
Terminal Form THROUGH-HOLE
Terminal Pitch 2.54 mm
Terminal Position SINGLE
Time@Peak Reflow Temperature-Max (s) 40
Voltage Tolerance-Max 2%

Alternate Parts for LM1085IT-3.3

This table gives cross-reference parts and alternative options found for LM1085IT-3.3. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of LM1085IT-3.3, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
LM1085IT-3.3/NOPB National Semiconductor Corporation Check for Price IC VREG 3.3 V FIXED POSITIVE LDO REGULATOR, 1.5 V DROPOUT, PSFM3, ROHS COMPLIANT, TO-220, 3 PIN, Fixed Positive Single Output LDO Regulator LM1085IT-3.3 vs LM1085IT-3.3/NOPB
EZ1587CT-3.3T Semtech Corporation Check for Price Fixed Positive LDO Regulator, 3.3V, 1.35V Dropout, BIPolar, PSFM3, ROHS COMPLIANT, TO-220, 3 PIN LM1085IT-3.3 vs EZ1587CT-3.3T
LMS1587CT-3.3/NOPB National Semiconductor Corporation Check for Price IC VREG 3.3 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSFM3, TO-220, 3 PIN, Fixed Positive Single Output LDO Regulator LM1085IT-3.3 vs LMS1587CT-3.3/NOPB
Part Number Manufacturer Composite Price Description Compare
LMS1587CT-3.3 National Semiconductor Corporation Check for Price IC VREG 3.3 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSFM3, TO-220, 3 PIN, Fixed Positive Single Output LDO Regulator LM1085IT-3.3 vs LMS1587CT-3.3
LM2931AMX-5.0/NOPB National Semiconductor Corporation Check for Price IC VREG 5 V FIXED POSITIVE LDO REGULATOR, 0.6 V DROPOUT, PDSO8, SOIC-8, Fixed Positive Single Output LDO Regulator LM1085IT-3.3 vs LM2931AMX-5.0/NOPB
LM2931M-5.0/NOPB National Semiconductor Corporation Check for Price IC VREG 5 V FIXED POSITIVE LDO REGULATOR, 0.6 V DROPOUT, PDSO8, SOIC-8, Fixed Positive Single Output LDO Regulator LM1085IT-3.3 vs LM2931M-5.0/NOPB
LM2931AM-5.0 National Semiconductor Corporation Check for Price IC VREG 5 V FIXED POSITIVE LDO REGULATOR, 0.6 V DROPOUT, PDSO8, SOIC-8, Fixed Positive Single Output LDO Regulator LM1085IT-3.3 vs LM2931AM-5.0
LM2931M-5.0 National Semiconductor Corporation Check for Price IC VREG 5 V FIXED POSITIVE LDO REGULATOR, 0.6 V DROPOUT, PDSO8, SOIC-8, Fixed Positive Single Output LDO Regulator LM1085IT-3.3 vs LM2931M-5.0
LMS1587CS-1.5 National Semiconductor Corporation Check for Price IC VREG 1.5 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSSO3, TO-263, 3 PIN, Fixed Positive Single Output LDO Regulator LM1085IT-3.3 vs LMS1587CS-1.5
LMS1587IS-1.5 National Semiconductor Corporation Check for Price IC VREG 1.5 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSSO3, TO-263, 3 PIN, Fixed Positive Single Output LDO Regulator LM1085IT-3.3 vs LMS1587IS-1.5
LMS1587CS-1.5/NOPB National Semiconductor Corporation Check for Price IC VREG 1.5 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSSO3, TO-263, 3 PIN, Fixed Positive Single Output LDO Regulator LM1085IT-3.3 vs LMS1587CS-1.5/NOPB
LMS1587CSX-1.5 National Semiconductor Corporation Check for Price IC VREG 1.5 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSSO3, TO-263, 3 PIN, Fixed Positive Single Output LDO Regulator LM1085IT-3.3 vs LMS1587CSX-1.5
LMS1587IS-1.5/NOPB National Semiconductor Corporation Check for Price IC VREG 1.5 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSSO3, TO-263, 3 PIN, Fixed Positive Single Output LDO Regulator LM1085IT-3.3 vs LMS1587IS-1.5/NOPB

LM1085IT-3.3 Related Parts

LM1085IT-3.3 Frequently Asked Questions (FAQ)

  • The maximum input voltage for the LM1085IT-3.3 is 15V, but it's recommended to keep it below 12V for reliable operation and to prevent overheating.

  • The LM1085IT-3.3 has an operating temperature range of -40°C to 125°C, but its performance may degrade at high temperatures. It's recommended to use a heat sink or thermal management system to keep the junction temperature below 125°C.

  • The output voltage tolerance of the LM1085IT-3.3 is typically ±2% at room temperature, but it can vary depending on the input voltage, output current, and operating temperature. You can calculate the output voltage tolerance using the formula: Output Voltage Tolerance = (Output Voltage x Temperature Coefficient) + (Output Voltage x Input Voltage Coefficient).

  • The minimum input voltage required for the LM1085IT-3.3 to regulate the output voltage is typically around 4.5V, but it can vary depending on the output current and operating conditions. It's recommended to keep the input voltage at least 1.5V higher than the output voltage to ensure reliable operation.

  • The LM1085IT-3.3 is a linear voltage regulator, not a switching regulator, so it's not suitable for high-frequency switching power supply applications. It's designed for low-dropout, low-noise, and high-precision voltage regulation in linear power supply applications.

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