component
LM2936QMPX-3.3
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownLM2936QMPX-3.3
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-4
LM2936QMPX-3.3 from Texas Instruments, in a SOT-223-4. 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 | Unregulated input voltage; the LM2936Q operating input range is 5.5 V to 40 V. |
| 2 | GND | power_in | Ground pin for the regulator. |
| 3 | OUT | power_out | Regulated output voltage; requires a minimum output capacitance with specific ESR on this pin to maintain stability. |
| 4 | GND | power_in | Ground pin, also connected to the SOT-223 tab (GND (TAB)). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-223-4 |
| Category | Power Management (PMIC) |
| Pins | 4 |
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 | 3.234 | 3.3 | 3.366 | V | 6 | ||
| Output voltage | 3.201 | 3.3 | 3.399 | V | 4 V ≤ VIN ≤ 26 V, 100 µA ≤ IOUT ≤ 50 mA, -40°C ≤ TJ ≤ 125°C | 6 | |
| Quiescent current | 15 | 20 | µA | IOUT = 100 μA, 8 V ≤ VIN ≤ 24 V | 6 | ||
| Quiescent current | 0.2 | 0.5 | mA | IOUT = 10 mA, 8 V ≤ VIN ≤ 24 V | 6 | ||
| Quiescent current | 1.5 | 2.5 | mA | IOUT = 50 mA, 8 V ≤ VIN ≤ 24 V | 6 | ||
| Line regulation | 5 | 10 | mV | 9 V ≤ VIN ≤ 16 V | 6 | ||
| Line regulation | 10 | 30 | mV | 6 V ≤ VIN ≤ 40 V, IOUT = 1 mA | 6 | ||
| Load regulation | 10 | 30 | mV | 100 μA ≤ IOUT ≤ 5 mA | 6 | ||
| Dropout voltage | 0.05 | 0.1 | V | IOUT = 100 μA | 6 | ||
| Dropout voltage | 0.2 | 0.4 | V | IOUT = 50 mA | 6 | ||
| Short-circuit current | 65 | 120 | 250 | mA | VOUT = 0 V | 6 | |
| Output bypass capacitance (COUT) ESR | 0.3 | 8 | Ω | COUT = 22 µF, 0.1 mA ≤ IOUT ≤ 50 mA | 6 | ||
| Output voltage with reverse polarity input | 0 | -0.3 | V | VIN = −15 V, RL = 500 Ω | 6 | ||
| Reverse polarity transient input voltage | -50 | -80 | V | RL = 500 Ω, T = 1 ms | 6 | ||
| Ripple rejection | -40 | -60 | dB | Vripple = 1 Vrms, ƒripple = 120 Hz | 6 | ||
| Maximum line transient | 60 | V | RL = 500 Ω, VOUT ≤ 3.63 V, T = 40 ms | 6 | |||
| Input voltage, VIN (survival) | VIN | -50 | 60 | V | 4 | ||
| Junction temperature, TJMAX | TJMAX | 150 | °C | 4 | |||
| Storage temperature, Tstg | Tstg | -65 | 150 | °C | 4 | ||
| Temperature, TJ | TJ | -40 | 125 | °C | 4 | ||
| Input voltage, VIN (LM2936Q) | VIN | 5.5 | 40 | V | 4 | ||
| Junction-to-ambient thermal resistance RθJA | RθJA | 62.8 | °C/W | SOT-223 (DCY), High-K PCB per JESD51-7 | 4 | ||
| Junction-to-case (top) thermal resistance RθJC(top) | RθJC(top) | 44.2 | °C/W | SOT-223 (DCY) | 4 | ||
| Junction-to-board thermal resistance RθJB | RθJB | 11.7 | °C/W | SOT-223 (DCY) | 4 | ||
| Junction-to-top characterization parameter ψJT | ψJT | 3.6 | °C/W | SOT-223 (DCY) | 4 | ||
| Junction-to-board characterization parameter ψJB | ψJB | 11.6 | °C/W | SOT-223 (DCY) | 4 | ||
| Output impedance | 450 | mΩ | IOUT = 30 mAdc and 10 mArms, ƒ = 1000 Hz | 6 | |||
| Output noise voltage | 500 | µV | 10 Hz-100 kHz | 6 | |||
| Long-term stability | 20 | mV/1000 Hr | 6 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | On the 8-pin SOIC (D) package, the four ground pins are thermally connected to the backside of the die. Adding approximately 0.04 square inches of 2 oz. copper pad area to these four pins improves the | 15 |
CAD (KiCad official)
- Symbol:
LM2936QMPX-3.3 - Footprint:
Package_TO_SOT_SMD:SOT-223 - 3D model: SOT-223-4 (KiCad packages3D, STEP)
- 3D model files:
lm2936qmpx-3-3-etched.step/lm2936qmpx-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2936qmpx-3-3.step/lm2936qmpx-3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (38 pp, sha256
5e6faea78729f75a, retrieved 2026-11-05, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).