component
TPS54428DDAR
Public Made by Adomby adom
Texas Instruments DC-DC Converters, HSOP-8-EP. 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
markdownTPS54428DDAR
Texas Instruments · DC-DC Converters · HSOP-8-EP
TPS54428DDAR from Texas Instruments, in a HSOP-8-EP. 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 control, active high, with high-level threshold of 1.6V minimum and low-level threshold of 0.6V maximum. |
| 2 | VFB | input | Converter feedback input for output voltage regulation via resistor divider network with threshold voltage of 765mV typical. |
| 3 | VREG5 | power_out | 5.5V regulated power supply output requiring 1µF capacitor to GND with maximum output current of 60mA at 4.0V input. |
| 4 | SS | input | Soft-start control input with external capacitor to GND, charged by 6µA typical current to set adjustable startup ramp time. |
| 5 | GND | power_in | Power ground return for switching circuit with single-point connection required for sensitive SS and VFB signal ground returns. |
| 6 | SW | output | Switch node connection between high-side and low-side NFET with operating voltage range -1.8V to 18V and 10ns transient withstand to 21V. |
| 7 | VBST | power_in | Bootstrap supply input for high-side FET gate driver requiring 0.1µF capacitor to SW with internal diode connected to VREG5. |
| 8 | VIN | power_in | Input voltage supply pin rated for 4.5V to 18V with typical supply current of 950µA to 1400µA at 12V operation. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HSOP-8-EP |
| Category | Power Management (PMIC) |
| Pins | 9 |
CAD (KiCad official)
- Symbol:
TPS54428DDAR - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: HSOP-8-EP (KiCad packages3D, STEP)
- 3D model files:
tps54428ddar-etched.step/tps54428ddar-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps54428ddar.step/tps54428ddar.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (33 pp, sha256
90f5c6d666cfcce0, 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).