component
UCC28740DR
Public Made by Adomby adom
Texas Instruments AC-DC Controllers And Regulators, SOIC-7. 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
markdownUCC28740DR
Texas Instruments · AC-DC Controllers And Regulators · SOIC-7
UCC28740DR from Texas Instruments, in a SOIC-7. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VDD | power_in | Bias-supply input pin operating from 9 V to 35 V with required 0.047 µF bypass capacitor to GND. |
| 2 | VS | power_in | Voltage-sense input providing demagnetization timing feedback, constant-current control, and overvoltage detection with operating range of −0.75 V to 7 V. |
| 3 | FB | input | Feedback input receiving optocoupler output current with voltage range of −0.5 V to 7 V and peak current rating of −1.2 mA. |
| 4 | GND | power_in | Ground reference pin serving as controller reference and low-side return for gate-drive output with all decoupling capacitors returned nearby. |
| 5 | CS | input | Current-sense input for peak primary-current monitoring and control with voltage range of −0.5 V to 5 V. |
| 6 | DRV | output | Gate-drive output for external high-voltage MOSFET with 25 mA source current and 14-16 V clamp voltage. |
| 8 | HV | power_in | High-voltage startup input connected to rectified bulk voltage providing up to 500 µA startup current to charge VDD capacitor up to 700 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-7 |
| Category | Power Management (PMIC) |
| Pins | 7 |
CAD (KiCad official)
- Symbol:
UCC28740DR - Footprint:
Package_SO:SOIC-8-N7_3.9x4.9mm_P1.27mm - 3D model: SOIC-7 (KiCad packages3D, STEP)
- 3D model files:
ucc28740dr-etched.step/ucc28740dr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ucc28740dr.step/ucc28740dr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (42 pp, sha256
d3bd1419dcceecd1, retrieved 2026-09-23, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).