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LM4040CYM3-5.0-TR

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

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LM4040CYM3-5.0-TR

Microchip Tech · Voltage Reference · SOT-23

LM4040CYM3-5.0-TR from Microchip Tech, in a SOT-23. 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 + passive Cathode: connect to positive voltage; LM4040 versions have a maximum operating current of 15 mA.
2 - power_in Anode: connect to negative voltage; on the LM4040-x.x the parasitic Schottky diode sits between this pin and Pin 3, so Pin 3 must float or be connected to Pin 2.
3 NC unconnected Not internally connected; this pin must be left floating or connected to the (-) pin (Pin 2).

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOT-23
Category Power Management (PMIC)
Pins 3

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Reverse-Breakdown Voltage Tolerance (C-grade, IR = 100 µA, TA = +25°C) VR -25 25 mV IR = 100 µA, TA = +25°C 8
Reverse-Breakdown Voltage Tolerance (C-grade, overtemperature, IR = 100 µA) VR -58 58 mV IR = 100 µA 8
Accuracy (C-grade ordering code, ±0.5%) -0.5 0.5 % 27
Minimum Operating Current IRMIN 54 74 µA TA = +25°C 8
Minimum Operating Current (overtemperature) IRMIN 80 µA 8
Average Reverse-Breakdown Voltage Temperature Coefficient ∆VR/∆T -100 20 100 ppm/°C IR = 1 mA 8
Reverse-Breakdown Voltage Change with Operating Current Change ∆VR/∆IR 0.5 1 mV IRMIN ≤ IR ≤ 1 mA, TA = +25°C 8
Reverse-Breakdown Voltage Change with Operating Current Change (overtemperature) ∆VR/∆IR 1.4 mV IRMIN ≤ IR ≤ 1 mA 8
Reverse-Breakdown Voltage Change with Operating Current Change ∆VR/∆IR 3.5 8 mV 1 mA ≤ IR ≤ 15 mA, TA = +25°C 8
Reverse-Breakdown Voltage Change with Operating Current Change (overtemperature) ∆VR/∆IR 12 mV 1 mA ≤ IR ≤ 15 mA 8
Reverse Dynamic Impedance ZR 0.5 1.1 Ω IR = 1 mA, f = 120 Hz, IAC = 0.1 IR, TA = +25°C 8
Reverse-Breakdown Voltage (nominal) VR 5 V IR = 100 µA, TA = +25°C 8
Reverse Current (LM4040-5.0) operating range upper limit IR 15 mA 3
Operating Temperature Range TA -40 85 °C 15
Reverse Current IR 20 mA 3
Forward Current IF 10 mA 3
ESD Susceptibility (HBM) 2 kV HBM; Note 2 3
ESD Susceptibility (MM) 200 V MM; Note 2 3
Storage Temperature TS -65 150 °C 15
Lead Temperature (vapor phase) 215 °C Vapor phase, 60 s 15
Lead Temperature (infrared) 220 °C Infrared, 15 s 15
Maximum Junction Temperature TJMAX 125 °C 3
Package Thermal Resistance, junction-to-ambient (3-Pin SOT-23, board-mounted) ΘJA 326 °C/W 15

CAD (KiCad official)

  • Symbol: LM4040CYM3-5.0-TR
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: lm4040cym3-5-0-tr-etched.step / lm4040cym3-5-0-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4040cym3-5-0-tr.step / lm4040cym3-5-0-tr.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (30 pp, sha256 a1a806c6cb906720, 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