component
UCC3804D
Public Made by Adomby adom
Texas Instruments AC-DC Controllers And Regulators, SOIC-8. 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
markdownUCC3804D
Texas Instruments · AC-DC Controllers And Regulators · SOIC-8
UCC3804D from Texas Instruments, in a SOIC-8. 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 | COMP | output | COMP is the error amplifier output and PWM comparator input; the low-output-impedance 2MHz error amplifier can both source and sink current, and forcing COMP to GND externally gives zero duty cycle. |
| 2 | FB | input | FB is the inverting input of the error amplifier, and its lead length and stray capacitance should be kept as short and small as possible for best stability. |
| 3 | CS | input | CS is the input to the PWM comparator and the over-current comparator, with an internal 100ns leading-edge blanking interval after the rising edge of OUT. |
| 4 | RC | input | RC is the oscillator timing pin, where a resistor from REF sets the charging current and a capacitor to GND sets the frequency, with recommended RT of 10k to 200k and CT of 100pF to 1000pF, and RT should never be below 10k. |
| 5 | GND | power_in | GND is the reference and power ground for all functions on the device, and the signal return should be separated from the high-current gate driver path. |
| 6 | OUT | output | OUT is the high-current power driver output that drives MOSFET gates with peak current exceeding ±750mA, and it is actively held low when VCC is below its threshold. |
| 7 | VCC | power_in | VCC is the device supply input, normally fed through a current-limiting resistor, with a recommended 11 V minimum from a low-impedance source and an absolute maximum of 12 V when ICC does not exceed 30 mA. |
| 8 | REF | output | REF is the voltage reference for the error amplifier and other internal functions, and it requires a ceramic bypass capacitor of at least 0.1µF to GND placed close to the pin, with additional bypass needed for external loads above 2.5mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
UCC3804D - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
ucc3804d-etched.step/ucc3804d-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ucc3804d.step/ucc3804d.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (59 pp, sha256
3f7e3ad23bdb4f2f, retrieved 2026-10-10, 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).