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MIC5259-3.3YD5-TR

Microchip Tech · Linear Voltage Regulators (LDO) · TSOT-23-5

MIC5259-3.3YD5-TR from Microchip Tech, in a TSOT-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 IN power_in Supply input; the datasheet operating supply range is +2.7V to +6V (VIN).
2 GND power_in Ground connection for the regulator.
3 EN input CMOS-compatible enable/shutdown input: logic high enables the regulator, logic low shuts it down, and the pin must not be left open.
4 BYP passive Reference bypass: connect an external capacitor of 0.01µF to 1.0µF from BYP to GND to reduce output noise; the pin may be left open.
5 OUT power_out Regulator output.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package TSOT-23-5
Category Power Supply Chip
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
Output Voltage Accuracy VO -1.5 1.5 % IOUT = 100µA; TJ = 25°C 3
Output Voltage Accuracy over temperature VO -3 3 % IOUT = 100µA; -40°C < TJ < +125°C 3
Line Regulation ∆VLRN -0.3 0.02 0.3 %/V VIN = VOUT + 1V to 6V 3
Load Regulation ∆VLDR 0.6 3 % IOUT = 0.1mA to 300mA 3
Dropout Voltage VIN, VOUT 300 500 mV IOUT = 300mA 3
Dropout Voltage over temperature VIN, VOUT 550 mV IOUT = 300mA; -40°C < TJ < +125°C 3
Quiescent Current IQ 0.2 1 µA VEN ≤ 0.4V (shutdown) 3
Ground Pin Current IGND 105 150 µA IOUT = 0mA 3
Ground Pin Current IGND 120 250 µA IOUT = 300mA 3
Current Limit ILIM 350 475 mA VOUT = 0V 3
Enable Input Logic-Low Voltage VIL 0.4 V VIN = 2.7 to 5.5V, regulator shutdown 3
Enable Input Logic-High Voltage VIH 1.6 V VIN = 2.7V to 5.5V, regulator enabled 3
Enable Input Current IEN 0.01 1 µA VIL ≤ 0.4V, regulator shutdown 3
Supply Input Voltage absolute maximum VIN 0 7 V 3
Enable Input Voltage absolute maximum VEN 0 7 V 3
Junction Temperature absolute maximum TJ -40 125 °C 3
Storage Temperature TS -65 150 °C 3
Lead Temperature 260 °C soldering, 5sec. 3
EDS Rating 2 kV 3
Supply Voltage operating VIN 2.7 6 V 3
Enable Input Voltage operating VEN 0 V 0V to VIN 3
Junction Temperature operating TJ -40 125 °C 3
Shutdown Resistance 500 Ω Discharge 3
Thermal Resistance junction-to-ambient TSOT-23 θJA 235 °C/W TSOT-23 (SOT-23-5), recommended minimum footprint 3
Thermal Resistance junction-to-ambient TSOT-23 1in square copper clad θJA 185 °C/W SOT-23-5, 1 inch square copper clad 8
Thermal Resistance junction-to-case TSOT-23 θJC 145 °C/W SOT-23-5 8
Thermal Shutdown Temperature 150 °C 3
Thermal Shutdown Hysteresis 10 °C 3

CAD (KiCad official)

  • Symbol: MIC5259-3.3YD5-TR
  • Footprint: Package_TO_SOT_SMD:TSOT-23-5
  • 3D model: TSOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: mic5259-3-3yd5-tr-etched.step / mic5259-3-3yd5-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mic5259-3-3yd5-tr.step / mic5259-3-3yd5-tr.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (11 pp, sha256 12bbfe80ca1206a9, retrieved 2026-10-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus off (skipped (clean text read)), 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