component
UCC21540ADWR
Public Made by Adomby adom
Texas Instruments Isolators - Gate Drivers, SOIC-16-300mil. 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
markdownUCC21540ADWR
Texas Instruments · Isolators - Gate Drivers · SOIC-16-300mil
UCC21540ADWR from Texas Instruments, in a SOIC-16-300mil. 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 | INA | input | Input signal for channel A with TTL/CMOS compatible threshold and 0.8V input hysteresis; internally pulled low when open circuit. |
| 2 | INB | input | Input signal for channel B with TTL/CMOS compatible threshold and 0.8V input hysteresis; internally pulled low when open circuit. |
| 3 | VCCI | power_in | Primary side power supply voltage with 3V to 18V operating range; decouple locally to GND with low ESR/ESL capacitor. |
| 4 | GND | power_in | Primary side ground reference; all primary side signals referenced to this ground. |
| 5 | DIS | input | Disable input; when set high disables both driver outputs; when set low enables outputs; recommended 1nF bypass capacitor for noise immunity. |
| 6 | DT | input | Dead time programming pin; connect to VCCI to disable dead time function or place resistor RDT between DT and GND to program dead time using DT(ns) = 10 × RDT(kΩ); recommended ≤1nF bypass capacitor. |
| 7 | NC | unconnected | No internal connection; can be left floating or connected to VCCI or GND. |
| 8 | VCCI | power_in | Primary side power supply voltage internally shorted to pin 3; preferred to bypass pins 3-4 rather than pins 8-4. |
| 9 | VSSB | power_in | Secondary side ground for driver B; ground reference for secondary side channel B. |
| 10 | OUTB | output | Driver B output for controlling B channel FET or IGBT gate; peak sink current 6A maximum. |
| 11 | VDDB | power_in | Secondary side power supply for driver B with 6.5V to 25V operating range; decouple locally to VSSB with low ESR/ESL capacitor. |
| 12 | NC | unconnected | No internal connection; recommended to leave floating to maximize creepage distance from driver A to driver B. |
| 13 | NC | unconnected | No internal connection; recommended to leave floating to maximize creepage distance from driver A to driver B; this pin is removed in SOIC-14 DWK package. |
| 14 | VSSA | power_in | Secondary side ground for driver A; ground reference for secondary side channel A. |
| 15 | OUTA | output | Driver A output for controlling A channel FET or IGBT gate; peak source current 4A maximum. |
| 16 | VDDA | power_in | Secondary side power supply for driver A with 6.5V to 25V operating range; decouple locally to VSSA with low ESR/ESL capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Power Management (PMIC) |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
UCC21540ADWR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files:
ucc21540adwr-etched.step/ucc21540adwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ucc21540adwr.step/ucc21540adwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (54 pp, sha256
436d808da2107def, retrieved 2026-10-05, 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-4-5-20251001(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).