component
UCC28950TPWRQ1
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
markdownUCC28950TPWRQ1
Texas Instruments · DC-DC Converters · TSSOP-24
UCC28950TPWRQ1 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_out | Provides a 5 V reference output with ±1.5% accuracy and up to 20 mA of output current. |
| 2 | EA+ | input | Non-inverting input of the error amplifier. |
| 3 | EA- | input | Inverting input of the error amplifier. |
| 4 | COMP | bidirectional | Error amplifier output and input to the PWM comparator. |
| 5 | SS/EN | input | Sets soft-start timing, enables the device, and configures hiccup-mode protection. |
| 6 | DELAB | input | Programs the dead-time delay between OUTA and OUTB. |
| 7 | DELCD | input | Programs the dead-time delay between OUTC and OUTD. |
| 8 | DELEF | input | Programs the delay time between OUTA and OUTF, and between OUTB and OUTE, with a range of 30 ns to 1400 ns. |
| 9 | TMIN | input | Programs the minimum duty cycle in burst mode, with a range of 100 ns to 800 ns. |
| 10 | RT | input | Sets the oscillator frequency and selects leader or follower mode. |
| 11 | RSUM | input | Programs slope compensation and selects voltage-mode or peak-current-mode control. |
| 12 | DCM | input | Sets the discontinuous conduction mode (DCM) threshold, programmable from 5% to 30% of the CS voltage. |
| 13 | ADELEF | input | Programs the delay time between primary-side and secondary-side switches (tAFSET and tBESET). |
| 14 | ADEL | input | Programs the primary-switch dead time over the CS voltage range (tABSET and tCDSET). |
| 15 | CS | input | Senses current for cycle-by-cycle overcurrent protection and the adaptive delay functions. |
| 16 | SYNC | bidirectional | Passes the synchronization signal from the leader controller to the input of the follower controller. |
| 17 | OUTF | output | Primary switching output with 0.2 A sink and source capability. |
| 18 | OUTE | output | Primary switching output with 0.2 A sink and source capability. |
| 19 | OUTD | output | Primary switching output with 0.2 A sink and source capability. |
| 20 | OUTC | output | Primary switching output with 0.2 A sink and source capability. |
| 21 | OUTB | output | Primary switching output with 0.2 A sink and source capability. |
| 22 | OUTA | output | Primary switching output with 0.2 A sink and source capability. |
| 23 | VDD | power_in | Bias supply input; the recommended supply range is 8 V to 17 V, with an absolute maximum of 20 V. |
| 24 | GND | power_in | Ground reference; all signals are referenced to this node. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-24 |
| Category | Power Management (PMIC) |
| Pins | 24 |
CAD (KiCad official)
- Symbol:
UCC28950TPWRQ1 - Footprint:
Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm - 3D model: TSSOP-24 (KiCad packages3D, STEP)
- 3D model files:
ucc28950tpwrq1-etched.step/ucc28950tpwrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ucc28950tpwrq1.step/ucc28950tpwrq1.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 2026-10-08, 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).