component
TPS79428DCQR
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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| tps79428dcqr-etched.step | 17d ago |
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TPS79428DCQR
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-6
TPS79428DCQR from Texas Instruments, in a SOT-223-6. 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 | EN | input | Enable input: a logic-high level enables the device and a logic-low level (below VEN(LOW), max 0.7 V for the old chip or 0.425 V for the new chip) puts it in shutdown, with VEN(HI) of at least 1.7 V (old chip) or 0.85 × VIN (new chip) and VEN up to 5.5 V. |
| 2 | IN | input | Unregulated input to the regulator, operating over 2.7 V to 5.5 V, with an absolute maximum of 6 V (old chip) or VIN + 0.3 V / 6.5 V, whichever is smaller (new chip), and a ceramic input bypass capacitor of at least 1 µF to GND. |
| 3 | GND | power_in | Regulator ground, which should connect directly to the bypass-capacitor grounds and be kept on its own ground plane for best PSRR and noise performance. |
| 4 | OUT | output | Regulator output, which requires a ceramic output capacitor of at least 1 µF (recommended 2.2 µF, with a minimum effective 0.47 µF on the new chip) between OUT and GND for loop stability. |
| 5 | NR/NC | input | On the old chip this is the noise-reduction pin, where an external capacitor of 0 to 100 nF (CNR, which must have minimal leakage) filters bandgap noise; on the new chip it is a no-connect pin that should be tied to GND or left floating. |
| 6 | GND | power_in | Ground pin that is also electrically tied to the SOT-223 thermal tab, which must be soldered to a large copper area on the board to dissipate heat. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-223-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |
CAD (KiCad official)
- Symbol:
TPS79428DCQR - Footprint:
Package_TO_SOT_SMD:SOT-223-6 - 3D model: SOT-223-6 (KiCad packages3D, STEP)
- 3D model files:
tps79428dcqr-etched.step/tps79428dcqr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps79428dcqr.step/tps79428dcqr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (51 pp, sha256
84291eb77a7c37c6, 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-haiku-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).