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Microchip Technology MIC2179-3.3YSM-TR — Discrete Semiconductors

MIC2179-3.3YSM-TR Buck Regulator, 3.3V Fixed, 1.5A, 20-SSOP

MPNMIC2179-3.3YSM-TR
End of Life

Microchip Technology MIC2179-3.3YSM-TR step-down buck regulator, fixed 3.3V output, 1.5A, 200kHz switching, 20-SSOP surface-mount package, Tape & Reel.

$7.28Ref. price · indicative, final on quote
Microchip Technology MIC2179-3.3YSM-TR datasheet (PDF)
Packaging20-SSOP (0.209", 5.30mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MIC2179-3.3YSM-TR specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Voltage - input16.5V
Voltage - output (Min (Fixed))3.3V
Output current1.5A
Frequency - switching200kHz
I/O channels1
Operating temperature-40°C ~ 125°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Down
TopologyBuck
Case20-SSOP (0.209\", 5.30mm Width)
Output configurationPositive
Synchronous rectifierNo

Product details

Fixed 3.3V buck at 1.5A — the switching regulator for a single-rail load

The MIC2179-3.3YSM-TR is a fixed 3.3 V output step-down (buck) switching regulator from Microchip Technology, delivering up to 1.5 A continuous from a 4.5 V to 16.5 V input rail. Switching at 200 kHz, it uses an external diode — no synchronous rectifier on-chip — so the bill of materials includes a Schottky catch diode and an output inductor sized for that frequency.

Input range and thermal envelope

The 4.5 V minimum input means it starts cleanly from a 5 V regulated rail or a 3-cell Li-ion stack; the 16.5 V maximum covers 12 V industrial supplies with margin.

Frequently asked questions

What is the closest pin-compatible alternative to MIC2179-3.3YSM-TR?

The MIC2179 family shares the same 20-SSOP footprint and pinout for adjustable-output variants, but the fixed 3.3 V version is a single-order-code part. For a parametric match, look for a 1.5 A, 200 kHz buck in the same package with an external compensation pin.

What compliance documentation does Microchip Technology provide for MIC2179-3.3YSM-TR?

The part is ROHS3 compliant.