component
TPS78429QDBVRQ1
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. 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
markdownTPS78429QDBVRQ1
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
TPS78429QDBVRQ1 from Texas Instruments, in a SOT-23-5. 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 | IN | power_in | Input supply pin accepting 1.65 V to 6.0 V with required input capacitor ≥ 0.1 µF from IN to ground to minimize input impedance and ensure optimal transient response. |
| 2 | GND | power_in | Ground reference pin that must be connected to the board ground plane for proper operation and thermal dissipation. |
| 3 | EN | input | Enable input pin; driving to logic high (≥ 0.85 V) enables the device, driving to logic low (≤ 0.425 V) disables it; do not leave floating, connect to IN if not used. |
| 4 | NC | unconnected | No connect pin that is not internally connected; leave floating or connect to ground for improved thermal performance. |
| 5 | OUT | output | Regulated output pin providing 2.9 V nominal with ±1.7% maximum accuracy; requires output capacitor ≥ 0.47 µF for stability and ≥ 1.0 µF for best transient response placed close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
TPS78429QDBVRQ1 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
tps78429qdbvrq1-etched.step/tps78429qdbvrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps78429qdbvrq1.step/tps78429qdbvrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (56 pp, sha256
0c6f0cf1abccc5c1, retrieved 2026-09-27, 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).