SPX1582

3A Ultra-Low Dropout Voltage Regulator
Data Sheets Active
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Overview

Information 3A Ultra Low Dropout Voltage Regulator
Output Option Adjustable
VOUT (V) Adj
VOUT Adj MIN (V) 1.25
VOUT Adj MAX (V) 6
IOUT (mA) 3000
VIN MIN (V) 1.8
VIN MAX (V) 5.5
IQ (µA) 5000
Accuracy (%) 2%
Vdrop (mV) 400
Output Noise (µVRMS) -
PSRR (dB) 80
Junction Temp Range (°C) 0 to 125
Package TO263-5
Features Enable,Remote sense,Current limit and thermal protection
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The SPX1582 is a 3A low dropout regulator with extremely low dropout voltage. The adjustable version requires only two external resistors to set the output voltage. The fixed version has a preset output of 3.3V, 2.8V or 2.5V and does not require any external resistors. The SPX1582 features a low dropout of 400mV (Typ.) and offers fast transient response. This device is suitable for Pentium applications requiring 2.8V, 2.5V from 3.3V ATX power supplies, where low current input voltage 1V greater than the output voltage is needed. With an external sense pin the load regulation is less than 1mV. This device is an excellent choice for use in powering low voltage microprocessors that require a lower dropout, fast transient response to regulate from 3.3V and 5V supplies. The SPX1582 is also an excellent choice as a post regulator for switching supply applications.

The SPX1582 offers protection against overcurrent faults, reversed input polarity, over temperature operation and positive or negative transient voltages.

The SPX1582 is offered in a 5-pin TO-220 and TO-263 compatible with industry standard 5-terminal regulators. For 5A, 3A and 1.5A ultra-low dropout versions refer to SPX1581, SPX1582 and SPX1583 datasheets respectively.

  • Low dropout voltage 500mV at 3A full load current
  • Adjustable ouput down to 1.25V from ATX power supply
  • Extremely tight load and line regulation
  • Standard 5-terminal low cost TO263

Documentation & Design Tools

All Types Data Sheets Application Notes Product Briefs & Brochures Symbols & Footprints
Type Title Version Date File Size
Data Sheets 3A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed R00 May 2023 347 KB
Application Notes AN200, Downloading and Installing CAD Symbols and Footprints with Ultra Librarian April 2019 1.2 MB
Product Brochures Power Management Brochure R03 April 2025 6.2 MB
Symbols & Footprints SPX1582T5-L/TR CAD File (.bxl) September 2018 18.5 KB
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Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package
SPX1582T5-L/TR N Y Y Y Y L3 / 245ᵒC TO-263-5

Click on the links above to download the Certificate of Non-Use of Hazardous Substances.

Additional Quality Documentation may be available, please Contact Support.

Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Suggested Replacement Buy Now Order Samples PDN
SPX1582HT5-L TO-263-5 0 125 OBS
SPX1582HT5-L/TR TO-263-5 0 125 OBS
SPX1582T5 TO-263-5 0 125 OBS
SPX1582T5-1-5 TO-263-5 OBS
SPX1582T5-1-8 TO-263-5 OBS
SPX1582T5-2-5 TO-263-5 OBS
SPX1582T5-2-5/TR TO-263-5 OBS
SPX1582T5-2-8 TO-263-5 OBS
SPX1582T5-2-8/TR TO-263-5 OBS
SPX1582T5-2-85 TO-263-5 OBS
SPX1582T5-2-85/TR TO-263-5 OBS
SPX1582T5-3-3 TO-263-5 0 125 OBS
SPX1582T5-3-3/TR TO-263-5 OBS
SPX1582T5-5-0 TO-263-5 OBS
SPX1582T5-5-0/TR TO-263-5 OBS
SPX1582T5-L TO-263-5 0 125 OBS SPX1582T5-L/TR
SPX1582T5-L-1-5 TO-263-5 0 125 OBS
SPX1582T5-L-1-5/TR TO-263-5 0 125 OBS SPX1582T5-L/TR
SPX1582T5-L-1-8 TO-263-5 0 125 OBS
SPX1582T5-L-1-8/TR TO-263-5 0 125 OBS SPX1582T5-L/TR
SPX1582T5-L-2-5 TO-263-5 0 125 OBS
SPX1582T5-L-2-5/TR TO-263-5 0 125 OBS SPX1582T5-L/TR
SPX1582T5-L-2-8 TO-263-5 0 125 OBS
SPX1582T5-L-2-8/TR TO-263-5 0 125 OBS SPX1582T5-L/TR
SPX1582T5-L-2-85 TO-263-5 0 125 OBS
SPX1582T5-L-2-85/TR TO-263-5 0 125 OBS SPX1582T5-L/TR
SPX1582T5-L-3-0 TO-263-5 0 125 OBS
SPX1582T5-L-3-0/TR TO-263-5 0 125 OBS
SPX1582T5-L-3-3 TO-263-5 0 125 OBS
SPX1582T5-L-3-3/TR TO-263-5 0 125 OBS SPX1582T5-L/TR
SPX1582T5-L-5-0 TO-263-5 0 125 OBS
SPX1582T5-L-5-0/TR TO-263-5 0 125 OBS SPX1582T5-L/TR
SPX1582T5-L/TR TO-263-5 0 125 Active Order
SPX1582T5/TR TO-263-5 0 125 OBS
SPX1582U5 TO-220-5 0 125 OBS
SPX1582U5-1-5 TO-220-5 OBS
SPX1582U5-1-8 TO-220-5 OBS
SPX1582U5-2-5 TO-220-5 OBS
SPX1582U5-2-8 TO-220-5 OBS
SPX1582U5-2-8/TR TO-220-5 0 125 OBS
SPX1582U5-2-85 TO-220-5 OBS
SPX1582U5-2-85/TR TO-220-5 0 125 OBS
SPX1582U5-3-3 TO-220-5 OBS
SPX1582U5-5-0 TO-220-5 OBS
SPX1582U5-5-0/TR TO-220-5 0 125 OBS
SPX1582U5-L TO-220-5 OBS
SPX1582U5-L-1-5 TO-220-5 OBS
SPX1582U5-L-1-8 TO-220-5 OBS
SPX1582U5-L-2-5 TO-220-5 0 125 OBS
SPX1582U5-L-2-8 TO-220-5 OBS
SPX1582U5-L-2-85 TO-220-5 OBS
SPX1582U5-L-3-0 TO-220-5 0 125 OBS
SPX1582U5-L-3-3 TO-220-5 OBS
SPX1582U5-L-5-0 TO-220-5 OBS
SPX1582UT-L-5-0 TO-220-5 0 125 OBS
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Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.

Packaging

Pkg Code Details Quantities Dimensions
TO-220-5
  • JEDEC Reference: TS-001
  • MSL Pb-Free: n/a
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 29.3ºC/W
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: n/a
  • Quantity per Tube: 50
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): n/a
  • Tape & Reel Unit Orientation: n/a
  • Dimensions: inch
  • Length: 0.370 max
  • Width: 0.415 max
  • Thickness: 0.190 max
  • Lead Pitch: 0.067
TO-263-5
  • JEDEC Reference: TO-263
  • MSL Pb-Free: L3 @ 245ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 31.2ºC/W
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 500
  • Quantity per Tube: 50
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 24 x 16
  • Tape & Reel Unit Orientation: Tab away from sprocket hole.
  • Dimensions: inch
  • Length: 0.380 max
  • Width: 0.420 max
  • Thickness: 0.190
  • Lead Pitch: 0.067

Notifications

Distribution Date Description File
07/17/2023 In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability. ADDENDUM A: Fixed MBB label logo for DX204001 to MaxLinear logo. ADDENDUM B: Replaced ‘All other affected products outer box label’ with clearer pictures. Corrected Date Issued (from original PCN) issue date +90 days to August 30, 2023.
06/01/2023 In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability.
06/01/2023 In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability. ADDENDUM: Fixed MBB label logo for DX204001 to MaxLinear logo.
07/11/2017 Product Discontinuation Notification
08/16/2016 Addition of an alternate qualified location, JCET.
07/26/2016 Product discontinuation notification. Discontinued.
12/22/2015 Alternate assembly site Addition of an alternate assembly supplier Nantong Fujitsu (China).
03/04/2009 Notice of Obsolescence Discontinued by Exar Corporation due to low market demand
02/28/2007 Product Obsolescence Letter and Discontinuation Notification. Discontinued.
02/02/2006 Announcing transfer of certain Power Management and Interface Products from Hillview fabrication and facility to wafer foundary Silan. See attached Product List Power Management and Interface products as listed are being transfer to external wafer foundry, due to cessation of operations of the sipex Hillview Fabrication manufacturing site

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Yes. Try our Excel-based heat calculation spreadsheet ANP-03, Thermal Calculator
 
For further study, this spreadsheet is mentioned in the following helpful application note: ANP-02, Thermal Considerations for Linear Regulators 
  

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