Skip to main content
Log in
Texas Instruments LM20125MHX/NOPB — Discrete Semiconductors

TI LM20125MHX/NOPB Buck Regulator, 5A, 16-HTSSOP

MPNLM20125MHX/NOPB
End of Life

Texas Instruments PowerWise® series, LM20125MHX/NOPB step-down buck regulator, adjustable output, 5A, 500kHz, 16-PowerTSSOP / 16-HTSSOP, surface mount, tape and reel.

$3.26Ref. price · indicative, final on quote
Texas Instruments LM20125MHX/NOPB datasheet (PDF)
Packaging16-PowerTSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
SeriesPowerWise®
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM20125MHX/NOPB specifications
ParameterValue
SeriesPowerWise®
Output typeAdjustable
MountingSurface Mount
Voltage - input2.95V
Voltage - output4.68V
Voltage - output (Min (Fixed))0.8V
Output current5A
Frequency - switching500kHz
I/O channels1
Operating temperature-40°C ~ 125°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Down
TopologyBuck
Case16-PowerTSSOP (0.173\", 4.40mm Width)
Output configurationPositive
Synchronous rectifierYes

Product details

The LM20125MHX/NOPB is a 5A adjustable step-down buck regulator from TI's PowerWise® series, switching at 500 kHz. The integrated synchronous rectifier eliminates the external Schottky diode, cutting the BOM count and improving efficiency at the full 5 A load — the thermal dissipation stays in the package rather than a separate diode. The -40°C to 125°C junction temperature range qualifies it for industrial enclosures and automotive cabin environments, though no AEC-Q grade is listed on this order code.

Package and board-fit — 16-HTSSOP thermal pad

Housed in a 16-PowerTSSOP with an exposed thermal pad, the 16-HTSSOP footprint requires a thermal land on the PCB to pull heat from the die. The supplier device package is 16-HTSSOP — the same mechanical outline as the PowerTSSOP, but the 'H' suffix indicates the exposed pad version. Confirm the PCB footprint matches the TI recommended land pattern before committing the layout.

The NOPB suffix confirms lead-free / ROHS3 status across the TI portfolio.

Frequently asked questions

What is the closest functional second-source to LM20125MHX/NOPB — TPS65261RHBT?

The TPS65261RHBT is a triple-output 3A buck regulator, not a single-output 5A part. It shares the same buck topology and adjustable output type, but the output current (3A vs 5A) and output count (3 vs 1) differ. It is not a pin-compatible or drop-in replacement for the LM20125MHX/NOPB.

What compliance documentation does Texas Instruments provide for LM20125MHX/NOPB?

The part is ROHS3 compliant per the TI listing. No REACH, UL, or IEC certification is recorded in this entry. Standard TI documentation includes the datasheet, RoHS declaration, and material composition data available through the TI website or distribution channel.