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Texas Instruments LM2832YMY/NOPB — Discrete Semiconductors

Texas Instruments LM2832YMY/NOPB Buck Reg, 2A, 8-HVSSOP

MPNLM2832YMY/NOPB
End of Life

Texas Instruments LM2832YMY/NOPB step-down buck regulator, adjustable output 0.6V to 4.5V, 2A output current, 550kHz switching frequency, 8-HVSSOP exposed-pad package, -40°C to 125°C junction temperature.

$2.27Ref. price · indicative, final on quote
Texas Instruments LM2832YMY/NOPB datasheet (PDF)
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM2832YMY/NOPB specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Voltage - input5.5V
Voltage - output4.5V
Voltage - output (Min (Fixed))0.6V
Output current2A
Frequency - switching550kHz
I/O channels1
Operating temperature-40°C ~ 125°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Down
TopologyBuck
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) Exposed Pad
Output configurationPositive
Synchronous rectifierNo

Product details

2A step-down regulator for 3V to 5.5V rails

The LM2832YMY/NOPB is a non-synchronous buck regulator that delivers 2A continuous output from a 3V to 5.5V input rail — the input covers single-cell Li-ion (3.0-4.2V), 3.3V, and 5V regulated supplies without a pre-regulator. The adjustable output, set by an external resistor divider, spans 0.6V to 4.5V, so the same BOM position serves 1.2V core, 1.8V I/O, 2.5V analog, or 3.3V peripheral rails.

Switching frequency and inductor selection

Because the part lacks a synchronous rectifier, the freewheeling diode is external — a Schottky with a forward rating matching the 2A output and a reverse voltage above 5.5V is needed; the diode's forward drop adds to the total conduction loss, so the efficiency peak sits around 1-1.5A rather than at full load.

Frequently asked questions

What is the closest functional alternative — TPS65261RHBT?

The TPS65261RHBT is a triple-output synchronous buck with a 2 MHz switching frequency and 3A per channel, but it is not a pin-compatible drop-in for the LM2832YMY/NOPB. The TPS65261 uses a 4.5V minimum input (vs 3V), requires a different inductor value due to the higher frequency, and adds two extra output channels. A board respin is needed to swap between them.