# UCC2808AQDR-1Q1

**Texas Instruments** · AC-DC Controllers And Regulators · SOIC-8

UCC2808AQDR-1Q1 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 | bidirectional | COMP is the error amplifier output and the PWM comparator input, and the error amplifier has an internal current limit so COMP can be pulled to GND externally to force 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 PWM input and peak-current/overcurrent comparator input, where exceeding the overcurrent threshold (0.65 V to 0.85 V) triggers a soft-start cycle and an internal MOSFET discharges the current-sense filter capacitor. |
| 4 | RC | input | RC is the oscillator programming pin, with a timing resistor from VDD and a timing capacitor to GND, where the datasheet recommends 10 kΩ to 200 kΩ for the resistor and 100 pF to 1000 pF for the capacitor. |
| 5 | GND | power_in | GND is the reference and power ground for all functions, and a low-impedance ground plane is strongly recommended because the device operates at high current and high frequency. |
| 6 | OUTB | output | OUTB is a high-current gate-drive output that switches between VDD and GND to drive a power MOSFET gate, rated for 500 mA peak source and 1 A peak sink. |
| 7 | OUTA | output | OUTA is a high-current gate-drive output that switches between VDD and GND to drive a power MOSFET gate, rated for 500 mA peak source and 1 A peak sink. |
| 8 | VDD | power_in | VDD is the device supply input, with a recommended range of 13 V to 14 V for the UCC2808-1 version (5 V to 14 V for -2) and an absolute maximum of 15 V at IDD ≤ 10 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `UCC2808AQDR-1Q1`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ucc2808aqdr-1q1-etched.step` / `ucc2808aqdr-1q1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ucc2808aqdr-1q1.step` / `ucc2808aqdr-1q1.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/ucc2808a-2q1) (22 pp, sha256 `c8a6b7947402ee8a`, retrieved 2026-10-11, 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](docs/ucc2808aqdr-1q1-datasheet.pdf)