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UCC28056ADBVR

Public Made by Adom

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Texas Instruments AC-DC Controllers And Regulators, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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UCC28056ADBVR

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ucc28056adbvr.step / ucc28056adbvr.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF