component

MP172GJ-Z

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by Ray

Monolithic Power Systems AC-DC Controllers And Regulators, TSOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpower management (pmic)mp172gj-z
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Datasheet

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Contents

README

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MP172GJ-Z

Monolithic Power Systems · AC-DC Controllers And Regulators · TSOT-23-5

MP172GJ-Z from Monolithic Power Systems, in a TSOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VCC power_in Control-circuit power supply. Internally biased from DRAIN by the on-chip high-voltage start-up regulator; VCCOFF ~5.7 V (regulator stops charging), VCCON ~5.5 V (regulator restarts), VCCstop ~3.4 V (IC stops switching), VCCpro ~2.5 V. Bypass to SOURCE with a low-μF capacitor.
2 FB input Regulator feedback input. Sampled 6 μs after MOSFET turn-off and compared against the 2.55 V internal reference (VFB) to regulate the output; OLP triggers when VFB < ~1.74 V for 170 ms (at fS=36 kHz); open-loop detection triggers when VFB < ~0.5 V.
3 SOURCE power_in Internal power MOSFET source and ground reference for VCC and FB. Pins 3 and 4 are internally common and must both be tied to the primary-side return.
4 SOURCE power_in Internal power MOSFET source and ground reference for VCC and FB. Pins 3 and 4 are internally common and must both be tied to the primary-side return.
5 DRAIN power_in Internal 700 V power MOSFET drain and high-voltage start-up current source input. Ron ~16 Ω typ; V(BR)DSS 700 V; ILimit ~210 mA (peak), ISCP ~400 mA. Connect to the switching node / rectified high-voltage rail per topology.

Key specifications

Parameter Value
Manufacturer Monolithic Power Systems
Package TSOT-23-5
Category Power Management (PMIC)
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • MP172GJ-Z
  • MP172GJ-ZGS
  • MP172GJ-ZGS-Z

CAD (KiCad official)

  • Symbol: MP172GJ-Z
  • Footprint: Package_TO_SOT_SMD:TSOT-23-5
  • 3D model: TSOT-23-5 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Monolithic Power Systems datasheet (None pp, sha256 3db857898bc6a74e, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF