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Texas Instruments LM1085IS-5.0/NOPB — Discrete Semiconductors
Texas Instruments

LM1085IS-5.0/NOPB 3A Fixed 5V LDO Regulator, TO-263-3

MPNLM1085IS-5.0/NOPB
End of Life

Texas Instruments LM1085IS-5.0/NOPB, a 3A fixed 5V positive LDO regulator, 1.5V max dropout at 3A, 68dB PSRR at 120Hz, -40°C to 125°C junction temperature, DDPAK/TO-263-3 surface-mount package.

$3.02Ref. price · indicative, final on quote
LM1085IS-5.0/NOPB datasheet
PackagingTO-263-4, D²Pak (3 Leads + Tab), TO-263AA
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

LM1085IS-5.0/NOPB Technical Specifications
ParameterValue
Output typeFixed
Mounting typeSurface Mount
Voltage - input25V
Voltage dropout1.5V @ 3A
Voltage - output (Min (Fixed))5V
Current - output3A
Current - quiescent10 mA
Operating temperature-40°C ~ 125°C (TJ)
PSRR68dB (120Hz)
PackageTube
CaseTO-263-4, D²Pak (3 Leads + Tab), TO-263AA
Protection featuresOver Current, Over Temperature
Number of regulators1
Output configurationPositive

Product details

Package and temperature grade

The part comes in a DDPAK/TO-263-3 surface-mount package (the 3-lead tabbed D²Pak variant). That tab is the output and the primary thermal path — board layout must connect it to a sufficient copper area to keep the junction below 125°C at full load. The -40°C to 125°C junction temperature range covers industrial and outdoor applications: motor drives, outdoor telecom, factory automation, and under-hood automotive auxiliary supplies. Over-current and over-temperature protection are built in.

Lifecycle and sourcing

The LM1085IS-5.0/NOPB carries an Active product status and is ROHS3 compliant. No end-of-life notice or last-time-buy schedule is in effect. For a production BOM line needing a 3A fixed 5V LDO in a TO-263-3 footprint, this part is a current-design fit with no near-term obsolescence risk.

Frequently asked questions

Can LM1085IS-5.0/NOPB be used as a 3.3V regulator?

No. The LM1085IS-5.0/NOPB has a fixed 5V output. It cannot be adjusted to 3.3V. For a 3.3V output, use the adjustable version (LM1085IS-ADJ) or a fixed 3.3V variant.

What is the PSRR of LM1085IS-5.0/NOPB?

The PSRR is 68 dB at 120 Hz. This provides effective rejection of line-frequency ripple from rectified AC or switching pre-regulators.