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TC105333ECTTR

Public Made by Adom

by adom

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

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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TC105333ECTTR

Microchip Tech · DC-DC Converters · SOT-23-5

TC105333ECTTR 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 EXT output Complementary switch control output that drives the gate of an external P-channel MOSFET (or a PNP base through a current-limiting resistor), with a maximum ON resistance of 22 Ω to VDD when high and 19 Ω to ground when low.
2 VDD power_in Power supply voltage input with an operating supply voltage range of 2.2 V to 10.0 V (absolute maximum -0.3 V to +12 V).
3 GND power_in Ground terminal, to be connected to a single point together with the input bypass and output filter capacitor grounds.
4 SHDN input Active-low shutdown input that places the device in low-power shutdown when brought low (VIL max 0.20 V, VIH min 0.65 V), reducing supply current to less than 0.5 µA.
5 VOUT input Voltage sense input that senses the output voltage for regulation and must be connected to the output voltage node.

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
Operating Supply Voltage VDD 2.2 10 V 2
Minimum Input Voltage VDDMIN 0.9 2.2 V EXT = High; No external components; VOUT = 0V, SHDN = VIN 2
Operating Supply Current (VR = 3.0V, 3.3V column) IDD 57 102 µA No external components; VOUT = 0V, SHDN = VIN; VR = 3.0V, 3.3V 2
Standby Supply Current (VR = 3.0V, 3.3V column) ISTBY 15 27 µA No external components; VOUT = SHDN = VIN; VR = 3.0V, 3.3V 2
Shutdown Supply Current ISHDN 0.5 µA SHDN = GND 2
Oscillator Frequency fOSC 255 300 345 kHz VIN = VOUT + 0.3V 2
Maximum Duty Cycle (PWM Mode) DTYMAX 100 % 2
Duty Cycle (PFM Mode) DTYPFM 15 25 35 % IOUT = 0mA 2
SHDN Input Logic High VIH 0.65 V VOUT = 0V, No external components 2
SHDN Input Logic Low VIL 0.2 V VOUT = 0V, No external components 2
EXT ON Resistance to VDD (VR = 3.3V column) REXTH 16 22 Ω No external components; VR = 3.3V; VOUT = SHDN = VIN, VEXT = (VIN, 0.4V) 2
EXT ON Resistance to GND (VR = 3.3V column) REXTL 14 19 Ω No external components; VR = 3.3V; VOUT = 0V, SHDN = VIN, VEXT = 0.4V 2
Voltage on VDD -0.3 12 V 2
EXT Output Current -100 100 mA 2
Voltage on VOUT, EXT, SHDN Pins -0.3 V 2
Operating Temperature Range -40 85 °C 2
Storage Temperature Range -40 125 °C 2

CAD (KiCad official)

  • Symbol: TC105333ECTTR
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: tc105333ecttr-etched.step / tc105333ecttr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tc105333ecttr.step / tc105333ecttr.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (14 pp, sha256 70f7bf9be262b9d1, retrieved 2026-10-20, 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