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Texas Instruments LM3673TL-ADJ/NOPB — Discrete Semiconductors

LM3673TL-ADJ/NOPB Buck Regulator, 350mA, 5-DSBGA

MPNLM3673TL-ADJ/NOPB
End of Life

Texas Instruments LM3673TL-ADJ/NOPB step-down buck regulator, 350mA output, 2MHz switching, adjustable output 1.1V-3.3V, synchronous rectifier, 5-DSBGA package, Tape & Reel.

$1.67Ref. price · indicative, final on quote
Packaging5-WFBGA, DSBGA
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM3673TL-ADJ/NOPB specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Voltage - input5.5V
Voltage - output3.3V
Voltage - output (Min (Fixed))1.1V
Output current350mA
Frequency - switching2MHz
I/O channels1
Operating temperature-30°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Down
TopologyBuck
Case5-WFBGA, DSBGA
Output configurationPositive
Synchronous rectifierYes

Product details

350 mA buck in a 1.41 x 1.08 mm DSBGA

The LM3673TL-ADJ/NOPB: The output is adjustable from 1.1 V up to 3.3 V, set by an external resistor divider. It uses a synchronous rectifier — the internal low-side FET replaces the external Schottky diode, saving board area and improving efficiency at light loads.

Package reality: 5-bump DSBGA

Housed in a 5-WFBGA, DSBGA (supplier device package 5-DSBGA, 1.41 x 1.08 mm), this is a wafer-level chip-scale package. The 0.5 mm bump pitch demands a controlled SMT process — the board land pattern must match TI's recommended stencil aperture to avoid solder bridging. Operating temperature range is -30 °C to 85 °C ambient, covering most industrial and consumer environments but not extended automotive or high-temp applications. Cut Tape works for prototype or low-volume builds.

Frequently asked questions

Does the LM3673TL-ADJ/NOPB require an external Schottky diode?

No — it uses an internal synchronous rectifier, so the low-side switch is integrated. No external catch diode is needed.