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Texas Instruments LM1117T-ADJ/NOPB — Analog & Data Acquisition

LM1117T-ADJ/NOPB – TI Adjustable LDO 800 mA TO-220-3

MPNLM1117T-ADJ/NOPB
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Texas Instruments LM1117T-ADJ/NOPB, positive adjustable LDO regulator, 800 mA output, 1.25V to 13.8V range, TO-220-3 through-hole package.

$2.0200Ref. price · indicative, final on quote
PackagingTO-220-3
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM1117T-ADJ/NOPB specifications
ParameterValue
Output typeAdjustable
MountingThrough Hole
Voltage - input15V
Voltage dropout1.2V @ 800mA
Voltage - output13.8V
Voltage - output (Min (Fixed))1.25V
Output current800mA
Current - supply10 mA
Current - quiescent5 mA
Operating temperature0°C~125°C
PSRR75dB (120Hz)
PackageTube
CaseTO-220-3
Protection featuresOver Current, Over Temperature
Number of regulators1
Output configurationPositive

Product details

Adjustable LDO in TO-220-3 — 800 mA, 1.2 V dropout max

The LM1117T-ADJ/NOPB is a single-output positive adjustable LDO from Texas Instruments, delivering up to 800 mA with a maximum dropout of 1.2 V at full load.

PSRR and protection — 75 dB at 120 Hz, over-current and over-temperature

Power-supply rejection ratio is 75 dB at 120 Hz, which suits post-regulation of rectified AC or switching pre-regulators for analog circuits. The part includes over-current and over-temperature protection, latching off until the fault clears. Quiescent current is 5 mA typical; supply current maximum is 10 mA.

The part is ROHS3 compliant.

Frequently asked questions

Is LM1117T-ADJ/NOPB compatible with the fixed 3.3 V version?

Pin-compatible in the same TO-220-3 footprint, but the ADJ version requires two external resistors to set the output. If your BOM calls for a fixed 3.3 V output, the fixed LM1117T-3.3/NOPB eliminates the resistor divider and the associated noise injection on the ADJ pin.