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md88r50

Public Made by Adom

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Shanghai Mingda Microelectronics DC-DC Converters, SOT-23-5L. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Contents

README

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MD88R50

Shanghai Mingda Microelectronics · DC-DC Converters · SOT-23-5L

MD88R50 from Shanghai Mingda Microelectronics, in a SOT-23-5L. 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 CE input Chip enable input. Drive high (VCEH ≥ 0.9 V) to enable the regulator; drive low (VCEL ≤ 0.6 V) to shut the chip down (shutdown current ≤ 0.5 µA typ). Referenced to VSS.
2 VOUT power_out Regulated boost output (5.0 V nominal for MD88R50, ±2.5% accuracy). Also serves as the internal circuit supply / output-voltage feedback sense node. Absolute max VSS-0.3 V to VSS+12 V.
3 NC unconnected No connect. Leave floating or optionally tie to VSS; no internal function.
4 VSS power_in Ground / negative supply return. Common reference for VIN, VOUT, and CE.
5 LX power_out Internal power-switch (NMOS) drain node. Connect the boost inductor between VIN and LX, and the Schottky rectifier between LX and VOUT. Switch on-resistance ~0.4 Ω typ, peak current up to 1 A, oscillator ~350 kHz. Absolute max VSS-0.3 V to VSS+12 V.

Key specifications

Parameter Value
Manufacturer Shanghai Mingda Microelectronics
Package SOT-23-5L
Category PMIC
Pins 5

Ordering variants

  • MD88R50

CAD (KiCad official)

  • Symbol: MD88R50
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)
  • 3D model files: md88r50-etched.step / md88r50-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md88r50.step / md88r50.glb are the bare package body.

Provenance

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

  • Datasheet: Shanghai Mingda Microelectronics datasheet (None pp, sha256 ec3653afb1e52d47, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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

Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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