component
UCC28950QPWRQ1
Public Made by Adomby adom
Texas Instruments DC-DC Converters, TSSOP-24. 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
markdownUCC28950QPWRQ1
Texas Instruments · DC-DC Converters · TSSOP-24
UCC28950QPWRQ1 from Texas Instruments, in a TSSOP-24. 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 | VREF | power_in | 5V reference voltage output with ±1.5% accuracy and 20mA source capability. |
| 2 | EA+ | input | Error amplifier noninverting input. |
| 3 | EA- | input | Error amplifier inverting input. |
| 4 | COMP | bidirectional | Error amplifier output and input to the PWM comparator. |
| 5 | SS/EN | input | Soft-start programming input, device enable control, and hiccup mode protection circuit input. |
| 6 | DELAB | input | Dead-time delay programming input between OUTA and OUTB. |
| 7 | DELCD | input | Dead-time delay programming input between OUTC and OUTD. |
| 8 | DELEF | input | Delay-time programming input between OUTA to OUTF and OUTB to OUTE. |
| 9 | TMIN | input | Minimum duty cycle programming input in burst mode. |
| 10 | RT | input | Oscillator frequency set input and leader or follower mode setting. |
| 11 | RSUM | input | Slope compensation programming input for voltage mode or peak current mode setting. |
| 12 | DCM | input | DCM threshold setting input. |
| 13 | ADELEF | input | Delay-time programming input between primary side and secondary side switches. |
| 14 | ADEL | input | Dead-time programming input for the primary switches over CS voltage range. |
| 15 | CS | input | Current sense input for cycle-by-cycle overcurrent protection and adaptive delay functions. |
| 16 | SYNC | bidirectional | Synchronization output from leader controller and synchronization input to follower controller. |
| 17 | OUTF | output | Primary switching output with 0.2A sink and source capability. |
| 18 | OUTE | output | Primary switching output with 0.2A sink and source capability. |
| 19 | OUTD | output | Primary switching output with 0.2A sink and source capability. |
| 20 | OUTC | output | Primary switching output with 0.2A sink and source capability. |
| 21 | OUTB | output | Primary switching output with 0.2A sink and source capability. |
| 22 | OUTA | output | Primary switching output with 0.2A sink and source capability. |
| 23 | VDD | power_in | Bias supply input voltage with recommended operating range 8V to 17V. |
| 24 | GND | power_in | Ground reference node for all signals. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-24 |
| Category | Power Management (PMIC) |
| Pins | 24 |
CAD (KiCad official)
- Symbol:
UCC28950QPWRQ1 - Footprint:
Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm - 3D model: TSSOP-24 (KiCad packages3D, STEP)
- 3D model files:
ucc28950qpwrq1-etched.step/ucc28950qpwrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ucc28950qpwrq1.step/ucc28950qpwrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (81 pp, sha256
f87284109bd08aff, retrieved 2026-10-01, 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).