component
TPS78401QDBVRQ1
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
markdownTPS78401QDBVRQ1
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
TPS78401QDBVRQ1 from Texas Instruments, in a SOT-23-5. 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 | IN | power_in | Input pin; accepts 1.65V to 6.0V supply voltage; use recommended value or larger ceramic capacitor from IN to ground; place input capacitor as close to the input of the device as possible. |
| 2 | GND | power_in | Ground pin; must be connected to ground on the board. |
| 3 | EN | input | Enable pin; driving this pin to logic high enables the device; driving this pin to logic low disables the device; do not float this pin; if not used, connect EN to IN; enable voltage threshold 0.85V (high) / 0.425V (low). |
| 4 | NC | unconnected | No connect pin; not internally connected; connect to ground for best thermal performance or leave floating. |
| 5 | OUT | power_out | Output pin; requires 0.47-µF or greater effective capacitance from OUT to ground for stability; for best transient response use 1-µF or larger ceramic capacitor; place output capacitor as close to output as possible. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
TPS78401QDBVRQ1 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
tps78401qdbvrq1-etched.step/tps78401qdbvrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps78401qdbvrq1.step/tps78401qdbvrq1.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 2026-09-23, 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-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).