component
TPS5403DR
Public Made by Adomby adom
Texas Instruments DC-DC Converters, SOIC-8. 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
markdownTPS5403DR
Texas Instruments · DC-DC Converters · SOIC-8
TPS5403DR from Texas Instruments, in a SOIC-8. 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 | BOOT | power_out | Bootstrap power supply pin requiring 0.1-µF ceramic capacitor between BOOT and LX, rated -0.3 to 7 V. |
| 2 | VIN | power_in | Input power supply, 4.5-28 V, with typical quiescent current of 100 µA at VSENSE > 3.5 V. |
| 3 | ROSC | input | Frequency program pin set to ground for 70 kHz, left open for 120 kHz, or connect external resistor for 50 kHz-1.1 MHz switching frequency. |
| 4 | SS | input | Soft start capacitor pin charged at 2 µA internal current to set output rise time, rated -0.3 to 3 V. |
| 5 | VSENSE | input | Output voltage feedback pin regulating 3.2-3.4 V at VIN = 12 V through comparison to 0.8 V internal reference. |
| 6 | COMP | output | Error amplifier output for PWM comparator with frequency compensation components connected to this pin, rated -0.3 to 3 V. |
| 7 | GND | power_in | Ground reference. |
| 8 | LX | output | Switching node output to external inductor with 2.2-3.1 A peak current limit at VIN = 12 V, rated -0.3 to 30 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
TPS5403DR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
tps5403dr-etched.step/tps5403dr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps5403dr.step/tps5403dr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (19 pp, sha256
821910aa4a7acb5f, retrieved 2026-09-23, tier: manufacturer) - 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).