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MIC2091-1YM5-TR

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Microchip Tech Power Distribution Switches, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MIC2091-1YM5-TR

Microchip Tech · Power Distribution Switches · SOT-23-5

MIC2091-1YM5-TR from Microchip Tech, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VIN power_in Supply input from +1.8V to +5.5V that powers the output switch and the internal control circuitry.
2 GND power_in Ground reference pin for the device.
3 EN input Active-high TTL-compatible enable input that turns the internal switch on and supplies power to the load; this pin cannot be left floating.
4 FAULT/ output Open-drain fault status output that must be pulled high with an external resistor and goes low when the part is in current limit, thermal limit, or UVLO while EN=1; it stays high when EN=0.
5 VOUT power_out Switched output controlled by the internal power switch, which connects to the load being driven.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOT-23-5
Category Power Management (PMIC)
Pins 5

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage (VIN) VIN -0.3 6 V 3
Output Voltage (VOUT) VOUT -0.3 6 V 3
FAULT/ Pin Voltage VFAULT/ -0.3 6 V 3
FAULT/ Pin Current IFAULT/ 25 mA 3
EN Pin Voltage VEN -0.3 V Maximum printed as VIN + 0.3V 3
Maximum Junction Temperature TJ 150 °C 3
Storage Temperature TS -65 150 °C 3
Lead Temperature 260 °C soldering, 10s 3
ESD HBM Rating 3 kV 3
ESD MM Rating 200 V 3
Supply Voltage (VIN) VIN 1.8 5.5 V 3
Output Voltage (VOUT) VOUT 1.8 5.5 V 3
EN Pin Voltage VEN 0 V Maximum printed as VIN 3
FAULT/ Pin Voltage VFAULT/ 0 5.5 V 3
FAULT/ Pin Current IFAULT/ 1 mA 3
Ambient Temperature TA -40 85 °C 3
Junction Temperature TJ -40 125 °C 3
Input Voltage Range VIN 1.8 5.5 V 3
Shutdown Current IVIN 5 10 µA VEN ≤ 0.5V (switch off), VOUT = open 3
Supply Current IVIN 70 110 µA VEN ≥ 1.5V (switch on), VOUT = open 3
Enable Logic Level High VIH(MIN) 1.5 V 3
Enable Logic Level Low VIL(MAX) 0.5 V 3
On Resistance MIC2091 RDS(ON) 700 1200 mΩ VIN = 5.0V, IOUT = 100mA 3
On Resistance MIC2091 RDS(ON) 790 1200 mΩ VIN = 3.3V, IOUT = 100mA 3
Current-Limit Threshold MIC2091 ILIMIT 100 150 200 mA @ VOUT = 4.5V 4
Current-Limit Threshold MIC2091 ILIMIT 100 175 250 mA @ VOUT = 0V 4
Time After Switch Shuts Down From An Over-Current Condition Before It Tries To Turn On Again TAUTORESTART 30 60 90 ms 4
Time After Switch Comes Into Current Limit Before The FAULT/ Pin Is Pulled Low tD_FAULT/ 5 10 20 ms 4
Under-Voltage Lockout Threshold VUVLO 1.75 V VIN rising 3
Under-Voltage Lockout Threshold Hysteresis VUVLO_HYS 100 mV 3
Enable Bias Current IEN 0.1 µA VEN = 5V 3
Output Turn-On Delay tON 215 µs RL = 500Ω, CL = 0.1µF 3
Output Turn-On Rise Time tR 5 µs RL = 500Ω, CL = 0.1µF 3
Output Turn-Off Delay tOFF 125 µs RL = 500Ω, CL = 0.1µF 3
Output Turn-Off Fall Time tF 115 µs RL = 500Ω, CL = 0.1µF 3
On Resistance MIC2091 RDS(ON) 1300 mΩ VIN = 1.8V, IOUT = 100mA 3
Input-to-Output Leakage Current (Forward Leakage Current) 10 μA VEN ≤ 0.5V, (output off), VIN = 5.5V, VOUT = 0V 3
Output-to-Input Leakage Current (Reverse Leakage Current) 10 µA VEN ≤ 0.5V, (output off), VOUT = 5.5V, VIN = 0V 4
Short-Circuit Response Time tSC_RESP 20 ns Short circuit applied to output after switch is turned on; VIN = 3.3V 4
Error Flag Output Voltage 0.4 V Output voltage high (1mA Sinking) 4
FAULT/ Rising Time tR_FAULT/ 5 µs FAULT/ connected to VIN = 5V through 10kΩ and 100pF in parallel 4
FAULT/ Falling Time tF_FAULT/ 1 µs 4
OGI Output Voltage Greater Than Input Voltage OGI 85 mV 4
OGI Time (output voltage greater than input before shutdown) OGITIME 10 ms 4
Over-Temperature Shutdown TOVERTEMP 150 °C TJ Rising 4
Over-Temperature Shutdown TOVERTEMP 140 °C TJ Falling 4

CAD (KiCad official)

  • Symbol: MIC2091-1YM5-TR
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: mic2091-1ym5-tr-etched.step / mic2091-1ym5-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mic2091-1ym5-tr.step / mic2091-1ym5-tr.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (23 pp, sha256 28dbce7d4bcce8c0, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF