component
TL432BQDBZRQ1
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOT-23-3. 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
markdownTL432BQDBZRQ1
Texas Instruments · Voltage Reference · SOT-23-3
TL432BQDBZRQ1 from Texas Instruments, in a SOT-23-3. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | REF | input | Reference input pin; applies threshold voltage relative to ANODE with reference input current range of -50 µA to 10 mA. |
| 2 | CATHODE | bidirectional | Shunt regulator output/cathode pin; operating voltage from VREF (≈2.5V) to 36 V with continuous current range of -100 mA to 150 mA. |
| 3 | ANODE | power_in | Common pin (ground reference); typically connected to ground or die substrate; all voltages measured relative to this pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-3 |
| 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 |
|---|---|---|---|---|---|---|---|
| Reference voltage | VREF | 2483 | 2495 | 2507 | mV | VKA = VREF, IKA = 10 mA, see Figure 20 | 5 |
| Deviation of reference voltage over full temperature | VI(DEV) | 14 | 34 | mV | VKA = VREF, IKA = 10 mA, TA = –40°C to 125°C, see Figure 20 | 5 | |
| Ratio of change in reference voltage to change in cathode voltage (10 V to VREF) | ΔVREF/ΔVKA | -1.4 | -2.7 | mV/V | IKA = 10 mA, see Figure 21; ΔVKA = 10 V – VREF | 5 | |
| Ratio of change in reference voltage to change in cathode voltage (36 V to 10 V) | ΔVREF/ΔVKA | -1 | -2 | mV/V | IKA = 10 mA, see Figure 21; ΔVKA = 36 V – 10 V | 5 | |
| Reference current | IREF | 2 | 4 | µA | IKA = 10 mA, R1 = 10 kΩ, R2 = ∞, see Figure 21 | 5 | |
| Deviation of reference current over full temperature | II(DEV) | 0.8 | 2.5 | µA | IKA = 10 mA, R1 = 10 kΩ, R2 = ∞, TA = –40°C to 125°C, see Figure 21 | 5 | |
| Minimum cathode current for regulation | IMIN | 0.4 | 0.7 | mA | VKA = VREF, see Figure 20 | 5 | |
| OFF-state cathode current | IOFF | 0.1 | 0.5 | µA | VKA = 36 V, VREF = 0, see Figure 22 | 5 | |
| Dynamic impedance | /ZKA/ | 0.2 | 0.5 | Ω | IKA = 1 mA to 100 mA, VKA = VREF, f ≤ 1 kHz, see Figure 20 | 5 | |
| Cathode voltage (recommended) | VKA | 36 | V | 4 | |||
| Cathode current (recommended) | IKA | 1 | 100 | mA | 4 | ||
| Operating free-air temperature | TA | -40 | 125 | °C | 4 | ||
| Cathode voltage | VKA | 37 | V | Voltage with respect to ANODE pin | 4 | ||
| Continuous cathode current | IKA | -100 | 150 | mA | 4 | ||
| Reference input current, low | IREF | -50 | µA | 4 | |||
| Reference input current, high | IREF | 10 | mA | 4 | |||
| Operating junction temperature | TJ | 150 | °C | 4 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| Junction-to-ambient thermal resistance (DBZ) | RθJA | 334.7 | °C/W | 4 | |||
| Junction-to-case (top) thermal resistance (DBZ) | RθJC(top) | 113.5 | °C/W | 4 | |||
| Junction-to-board thermal resistance (DBZ) | RθJB | 67.6 | °C/W | 4 | |||
| Junction-to-top characterization parameter (DBZ) | ψJT | 6.7 | °C/W | 4 | |||
| Junction-to-board characterization parameter (DBZ) | ψJB | 65.9 | °C/W | 4 |
CAD (KiCad official)
- Symbol:
TL432BQDBZRQ1 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
tl432bqdbzrq1-etched.step/tl432bqdbzrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tl432bqdbzrq1.step/tl432bqdbzrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (31 pp, sha256
6e78e952a7d3e8bc, retrieved 2026-09-21, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).