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ATL432AQDBZR
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Texas Instruments Voltage References, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ATL432AQDBZR
Texas Instruments · Voltage References · SOT-23-3
ATL432AQDBZR from Texas Instruments, in a SOT-23-3. 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 | REF | input | Reference input that sets the shunt threshold relative to the common anode, with Vref of approximately 2.5V and absolute maximum reference input current of 10mA. |
| 2 | CATHODE | bidirectional | Shunt current/voltage input, with recommended cathode voltage from Vref to 36V (40V absolute max) and cathode current from 35µA to 100mA. |
| 3 | ANODE | power_in | Common pin, normally connected to ground. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-3 |
| Category | Power Supply Chip |
| 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 | 2475 | 2500 | 2525 | mV | VKA = Vref, IKA = 1mA | 4 |
| Deviation of reference input voltage over full temperature range (ATL43xAQ) | VI(dev) | 6 | 34 | mV | VKA = Vref, IKA = 1mA, ATL43xAQ; TA = -40°C to 125°C | 4 | |
| Ratio of change in reference voltage to change in cathode voltage | ΔVref / ΔVKA | -0.4 | -2.7 | mV/V | IKA = 1mA, ΔVKA = 10V − Vref | 4 | |
| Ratio of change in reference voltage to change in cathode voltage | ΔVref / ΔVKA | -0.1 | -2 | mV/V | IKA = 1mA, ΔVKA = 36V − 10V | 4 | |
| Reference input current | Iref | 30 | 150 | nA | IKA = 1mA, R1 = 10kΩ, R2 = ∞ | 4 | |
| Deviation of reference input current over full temperature range | II(dev) | 20 | 50 | nA | IKA = 1mA, R1 = 10kΩ, R2 = ∞ | 4 | |
| Minimum cathode current for regulation | Imin | 20 | 35 | µA | VKA = Vref | 4 | |
| Off-state cathode current | Ioff | 0.05 | 0.2 | µA | VKA = 36V, Vref = 0 | 4 | |
| Dynamic impedance | /zKA/ | 0.05 | 0.3 | Ω | VKA = Vref, f ≤ 1 kHz, IKA = 1 mA to 100 mA | 4 | |
| Cathode voltage (abs max) | VKA | 40 | V | over operating free-air temperature range; with respect to ANODE | 3 | ||
| Continuous cathode current (abs max) | IKA | -100 | 150 | mA | over operating free-air temperature range | 3 | |
| Reference input current (abs max) | II(ref) | -0.05 | 10 | mA | over operating free-air temperature range | 3 | |
| Operating virtual junction temperature | TJ | -40 | 150 | °C | over operating free-air temperature range | 3 | |
| Storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| ESD HBM | V(ESD) | -2000 | 2000 | V | Human-body model per ANSI/ESDA/JEDEC JS-001 | 3 | |
| ESD CDM | V(ESD) | -1000 | 1000 | V | Charged-device model per JESD22-C101 | 3 | |
| Cathode voltage (recommended) | VKA | 36 | V | min printed as Vref | 3 | ||
| Cathode current (recommended) | IKA | 0.035 | 100 | mA | 3 | ||
| Operating free-air temperature, Q Grade | TA | -40 | 125 | °C | Q Grade | 3 | |
| Junction-to-ambient thermal resistance | RθJA | 331.8 | °C/W | DBZ (SOT-23), 3 pins | 4 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 106.5 | °C/W | DBZ (SOT-23), 3 pins | 4 | ||
| Junction-to-board thermal resistance | RθJB | 64.6 | °C/W | DBZ (SOT-23), 3 pins | 4 | ||
| Junction-to-top characterization parameter | ψJT | 4.9 | °C/W | DBZ (SOT-23), 3 pins | 4 | ||
| Junction-to-board characterization parameter | ψJB | 62.9 | °C/W | DBZ (SOT-23), 3 pins | 4 |
CAD (KiCad official)
- Symbol:
ATL432AQDBZR - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
atl432aqdbzr-etched.step/atl432aqdbzr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);atl432aqdbzr.step/atl432aqdbzr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (31 pp, sha256
a6f3040c07336fbd, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).
# ATL432AQDBZR
**Texas Instruments** · Voltage References · SOT-23-3
ATL432AQDBZR from Texas Instruments, in a SOT-23-3. 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 | REF | input | Reference input that sets the shunt threshold relative to the common anode, with Vref of approximately 2.5V and absolute maximum reference input current of 10mA. |
| 2 | CATHODE | bidirectional | Shunt current/voltage input, with recommended cathode voltage from Vref to 36V (40V absolute max) and cathode current from 35µA to 100mA. |
| 3 | ANODE | power_in | Common pin, normally connected to ground. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-3 |
| Category | Power Supply Chip |
| 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 | 2475 | 2500 | 2525 | mV | VKA = Vref, IKA = 1mA | 4 |
| Deviation of reference input voltage over full temperature range (ATL43xAQ) | VI(dev) | | 6 | 34 | mV | VKA = Vref, IKA = 1mA, ATL43xAQ; TA = -40°C to 125°C | 4 |
| Ratio of change in reference voltage to change in cathode voltage | ΔVref / ΔVKA | | -0.4 | -2.7 | mV/V | IKA = 1mA, ΔVKA = 10V − Vref | 4 |
| Ratio of change in reference voltage to change in cathode voltage | ΔVref / ΔVKA | | -0.1 | -2 | mV/V | IKA = 1mA, ΔVKA = 36V − 10V | 4 |
| Reference input current | Iref | | 30 | 150 | nA | IKA = 1mA, R1 = 10kΩ, R2 = ∞ | 4 |
| Deviation of reference input current over full temperature range | II(dev) | | 20 | 50 | nA | IKA = 1mA, R1 = 10kΩ, R2 = ∞ | 4 |
| Minimum cathode current for regulation | Imin | | 20 | 35 | µA | VKA = Vref | 4 |
| Off-state cathode current | Ioff | | 0.05 | 0.2 | µA | VKA = 36V, Vref = 0 | 4 |
| Dynamic impedance | /zKA/ | | 0.05 | 0.3 | Ω | VKA = Vref, f ≤ 1 kHz, IKA = 1 mA to 100 mA | 4 |
| Cathode voltage (abs max) | VKA | | | 40 | V | over operating free-air temperature range; with respect to ANODE | 3 |
| Continuous cathode current (abs max) | IKA | -100 | | 150 | mA | over operating free-air temperature range | 3 |
| Reference input current (abs max) | II(ref) | -0.05 | | 10 | mA | over operating free-air temperature range | 3 |
| Operating virtual junction temperature | TJ | -40 | | 150 | °C | over operating free-air temperature range | 3 |
| Storage temperature | Tstg | -65 | | 150 | °C | | 3 |
| ESD HBM | V(ESD) | -2000 | | 2000 | V | Human-body model per ANSI/ESDA/JEDEC JS-001 | 3 |
| ESD CDM | V(ESD) | -1000 | | 1000 | V | Charged-device model per JESD22-C101 | 3 |
| Cathode voltage (recommended) | VKA | | | 36 | V | min printed as Vref | 3 |
| Cathode current (recommended) | IKA | 0.035 | | 100 | mA | | 3 |
| Operating free-air temperature, Q Grade | TA | -40 | | 125 | °C | Q Grade | 3 |
| Junction-to-ambient thermal resistance | RθJA | | 331.8 | | °C/W | DBZ (SOT-23), 3 pins | 4 |
| Junction-to-case (top) thermal resistance | RθJC(top) | | 106.5 | | °C/W | DBZ (SOT-23), 3 pins | 4 |
| Junction-to-board thermal resistance | RθJB | | 64.6 | | °C/W | DBZ (SOT-23), 3 pins | 4 |
| Junction-to-top characterization parameter | ψJT | | 4.9 | | °C/W | DBZ (SOT-23), 3 pins | 4 |
| Junction-to-board characterization parameter | ψJB | | 62.9 | | °C/W | DBZ (SOT-23), 3 pins | 4 |
## CAD (KiCad official)
- Symbol: `ATL432AQDBZR`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `atl432aqdbzr-etched.step` / `atl432aqdbzr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `atl432aqdbzr.step` / `atl432aqdbzr.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/atl432.pdf?ts=1769433796323) (31 pp, sha256 `a6f3040c07336fbd`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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](docs/atl432aqdbzr-datasheet.pdf)