component
UCC28951PWR
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
markdownUCC28951PWR
Texas Instruments · DC-DC Converters · TSSOP-24
UCC28951PWR 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 | Provides 5V, ±1.5%, 20mA reference voltage output. |
| 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, device enable, 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 for burst mode operation. |
| 10 | RT | input | Oscillator frequency programming and leader or follower mode setting input. |
| 11 | RSUM | input | Slope compensation programming and voltage mode or peak current mode setting input. |
| 12 | DCM | input | DCM threshold setting input. |
| 13 | ADELEF | input | Delay-time programming input between primary side and secondary side switches, tAFSET and tBESET. |
| 14 | ADEL | input | Dead-time programming input for primary switches over CS voltage range, tABSET and tCDSET. |
| 15 | CS | input | Current sense input for cycle-by-cycle overcurrent protection and adaptive delay functions. |
| 16 | SYNC | bidirectional | Synchronization output from leader controller to input of 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 with recommended operating range 8V to 17V. |
| 24 | GND | power_in | Ground; 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:
UCC28951PWR - Footprint:
Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm - 3D model: TSSOP-24 (KiCad packages3D, STEP)
- 3D model files:
ucc28951pwr-etched.step/ucc28951pwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ucc28951pwr.step/ucc28951pwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (80 pp, sha256
a765d09f25ef27f8, retrieved 2026-10-02, tier: manufacturer) - 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).