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MCP1804T-5002I

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by Ray

Microchip Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpower management (pmic)mcp1804t-5002i
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Contents

README

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MCP1804T-5002I

Microchip Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

MCP1804T-5002I from Microchip Tech, in a SOT-89-3. 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 VIN power_in Unregulated supply input. Operating range 2.0V to 28.0V (VIN ≥ VR + 2.0V for regulation). Recommended input capacitor 0.1-1 µF ceramic (X7R) placed close to the pin to keep source impedance low (<10 Ω) and maintain LDO stability.
2 GND power_in Regulator ground / reference terminal. Carries only the LDO bias current (50-60 µA typical) - no high load current. Tie to the negative side of both the input and output capacitors and to the load return; minimize voltage drop between this pin and the load's negative rail because VOUT regulation is referenced to it.
3 NC unconnected No internal connection. This pin is a true 'No Connect' - may be left floating or tied to any convenient net for PCB routing.
4 ~{SHDN} input Active-low shutdown input. Logic-high (V_SHDN_H ≥ 1.1V, up to VIN) enables the regulator; logic-low (V_SHDN_L ≤ 0.35V) disables the output and drops the device to ~0.01 µA shutdown current. Absolute-max range VSS−0.3V to +30V. No internal pull-up/pull-down - this pin must be actively driven to VIN or GND (never left floating) to keep the device stable.
5 VOUT power_out Regulated 5.0V ±2% output (this ordering variant is the -50 = 5.0V option). Delivers up to 150 mA continuous; current-limit ~200 mA typical with foldback to ~40 mA into a hard short. Requires 0.1-1 µF ceramic (X7R/X5R), tantalum, or aluminum-electrolytic output capacitor placed close to the pin for stability; larger values improve dynamic load response and PSRR.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOT-89-3
Category Power Management (PMIC)
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • MCP1804T-5002IOT
  • MCP1804T-5002IMT
  • MCP1804T-5002IMB
  • MCP1804T-5002IDB

CAD (KiCad official)

  • Symbol: MCP1804T-5002I
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Microchip Tech datasheet (36 pp, sha256 f28199ed78f23549, 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