component
UCC28056ADBVR
Public Made by Adomby adom
Texas Instruments AC-DC Controllers And Regulators, SOT-23-6. 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
markdownUCC28056ADBVR
Texas Instruments · AC-DC Controllers And Regulators · SOT-23-6
UCC28056ADBVR from Texas Instruments, in a SOT-23-6. 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 | VOSNS | input | Voltage error amplifier inverting input, regulated against the internal VOSReg reference of 2.45-2.55 V (2.5 V typical), which also provides first-level output overvoltage protection: switching is suspended when VOSNS rises above VOvp1Rise (2.69-2.81 V) and resumes when it falls below VOvp1Fall (2.60-2.73 V) at VCC = 12 V. |
| 2 | ZCD/CS | input | Input fed by a resistor divider across the power MOSFET drain and source that senses the current-sense voltage while DRV is high (overcurrent thresholds 0.5 V for Ocp1 and 0.75 V for Ocp2) and the drain waveform while DRV is low (zero-current detection, line feedforward, line undervoltage, and second-level output overvoltage at 1.125 V), with absolute maximum rating -0.5 to 7 V. |
| 3 | VCC | power_in | Positive supply pin: switching starts once VCC exceeds VCCStart and stops if VCC stays below VCCStop for longer than TUVLOBlk, with the device to be supplied from 11 V to 34 V and an absolute maximum of 36 V. |
| 4 | GND | power_in | Controller ground reference, to be connected only to the terminal of the current-sense resistor RCS on the power-stage side, so that the ZCD/CS-to-GND voltage equals the RCS voltage during MOSFET conduction. |
| 5 | DRV | bidirectional | Gate drive output for the main power MOSFET, internally limited to VDRHigh (10-15 V, 13.7 V typical at VCC = 25 V) with a peak sink current of 1 A and peak source current of -0.7 A, where an external resistor from DRV to GND selects the valley-switching delay TZCDR during startup and absolute maximum is -0.3 to 20 V. |
| 6 | COMP | bidirectional | Internal transconductance error amplifier output and power-demand input, where the voltage-loop compensation RC network connects from this pin to GND, the pin is internally clamped to 5.5-5.71 V high, switching turns off below VBSTFall (0.5 V) and back on above VBSTRise (0.625 V) for burst mode, and the absolute maximum rating is -0.5 to 7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |
CAD (KiCad official)
- Symbol:
UCC28056ADBVR - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
ucc28056adbvr-etched.step/ucc28056adbvr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ucc28056adbvr.step/ucc28056adbvr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (49 pp, sha256
c9fa6ad1b816408d, 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).