component
TL4050B25QDCKR
Public Made by Adomby adom
Texas Instruments Voltage Reference, SC-70-5. 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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README
markdownTL4050B25QDCKR
Texas Instruments · Voltage Reference · SC-70-5
TL4050B25QDCKR from Texas Instruments, in a SC-70-5. 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 | ANODE | passive | Anode (reference return) of the two-terminal shunt reference; the cathode current IZ returns here. |
| 2 | * | passive | Starred pin; TI recommends connecting it to the anode in applications with high EMI (such as near transformers or other EMI sources) or significant high-frequency switching noise. |
| 3 | CATHODE | passive | Cathode of the shunt reference, the regulated output VZ (2.5 V for the 25 option) biased through a series resistor with 15 mA maximum recommended cathode current. |
| 4 | NC | unconnected | No internal connection. |
| 5 | NC | unconnected | No internal connection. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SC-70-5 |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse breakdown voltage tolerance, initial (25°C) | ΔVZ | -5 | 5 | mV | IZ = 100μA, TA = 25°C | 6 | |
| Reverse breakdown voltage tolerance, full range | ΔVZ | -18 | 18 | mV | IZ = 100μA, full range TA = -40°C to 125°C | 6 | |
| Minimum cathode current | IZ,min | 41 | 60 | μA | TA = 25°C | 6 | |
| Minimum cathode current, full range | IZ,min | 65 | μA | full range TA = -40°C to 125°C | 6 | ||
| Average temperature coefficient of VZ | αVZ | -20 | 20 | ppm/°C | IZ = 10mA, TA = 25°C | 6 | |
| Average temperature coefficient of VZ | αVZ | -15 | 15 | ppm/°C | IZ = 1mA, TA = 25°C | 6 | |
| Average temperature coefficient of VZ | αVZ | -50 | 50 | ppm/°C | IZ = 100μA, full range TA = -40°C to 125°C | 6 | |
| Change of VZ with cathode current | VZ | 0.3 | 0.8 | mV | IZ,min < IZ < 1mA, TA = 25°C | 6 | |
| Change of VZ with cathode current, full range | VZ | 1.2 | mV | IZ,min < IZ < 1mA, full range TA = -40°C to 125°C | 6 | ||
| Change of VZ with cathode current | VZ | 2.3 | 6 | mV | 1mA < IZ < 15mA, TA = 25°C | 6 | |
| Change of VZ with cathode current, full range | VZ | 8 | mV | 1mA < IZ < 15mA, full range TA = -40°C to 125°C | 6 | ||
| Reverse breakdown voltage | VZ | 2.5 | V | IZ = 100μA, TA = 25°C | 6 | ||
| Reverse dynamic impedance | ZZ | 0.3 | Ω | IZ = 1mA, f = 120Hz, IAC = 0.1 IZ, TA = 25°C | 6 | ||
| Broadband noise | eN | 41 | μVRMS | IZ = 100μA, 10Hz ≤ f ≤ 10kHz, TA = 25°C | 6 | ||
| Long-term stability of reverse breakdown voltage | 120 | ppm | t = 1000 h, TA = 25°C ± 0.1°C, IZ = 100μA | 6 | |||
| Thermal hysteresis | VHYST | 0.7 | mV | ΔTA = -40°C to 125°C | 6 | ||
| Continuous cathode current | IZ | -10 | 20 | mA | 4 | ||
| Operating virtual junction temperature | TJ | 150 | °C | 4 | |||
| Storage temperature range | Tstg | -65 | 150 | °C | 4 | ||
| Cathode current | IZ | 15 | mA | 4 | |||
| Ambient temperature, I grade (TL4050xI) | TA | -40 | 85 | °C | natural ventilation, I temperature grade | 4 | |
| Ambient temperature, Q grade (TL4050xQ) | TA | -40 | 125 | °C | natural ventilation, Q temperature grade | 4 | |
| Package thermal impedance, DCK (SC70) | θJA | 252 | °C/W | DCK package, per JESD 51-7 | 4 |
CAD (KiCad official)
- Symbol:
TL4050B25QDCKR - Footprint:
Package_TO_SOT_SMD:SOT-353_SC-70-5 - 3D model: SC-70-5 (KiCad packages3D, STEP)
- 3D model files:
tl4050b25qdckr-etched.step/tl4050b25qdckr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tl4050b25qdckr.step/tl4050b25qdckr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (41 pp, sha256
9518f91a68f71d48, retrieved 2026-10-11, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).