# UC2823DW

**Texas Instruments** · DC-DC Converters · SOIC-16-300mil

UC2823DW from Texas Instruments, in a SOIC-16-300mil. 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 | Inv. | input | Inverting input of the error amplifier; analog inputs are rated -0.3V to +6V. |
| 2 | N.I. | input | Non-inverting input of the error amplifier; analog inputs are rated -0.3V to +6V. |
| 3 | E/A Out | output | Error amplifier output, with maximum output current of 5mA. |
| 4 | Clock | output | Oscillator clock output, with maximum output current of -5mA. |
| 5 | RT | passive | Oscillator timing resistor connection, with maximum oscillator charging current of -5mA. |
| 6 | CT | passive | Oscillator timing capacitor connection. |
| 7 | Ramp | input | Ramp input to the PWM comparator, rated -0.3V to +6V. |
| 8 | Soft Start | passive | Soft start pin that doubles as a maximum duty cycle clamp, with maximum sink current of 20mA. |
| 9 | ILIM/S.D. | input | Shutdown comparator input (1.4V threshold) with TTL-compatible shutdown, rated -0.3V to +6V. |
| 10 | Ground | power_in | Signal ground; all voltages are referenced to this pin. |
| 11 | ILIMREF | input | DC reference input voltage to the current limit comparator, rated -0.3V to +6V. |
| 12 | Pwr Gnd | power_in | Power ground for the output stage. |
| 13 | Vc | power_in | Supply for the totem pole output stage, 30V maximum. |
| 14 | Out | output | Totem pole output, 1.5A peak, absolute maximum 0.5A DC and 2.0A pulse (0.5µs). |
| 15 | Vcc | power_in | Supply voltage input, 30V maximum, with undervoltage lockout with 800mV hysteresis. |
| 16 | VREF 5.1V | power_out | 5.1V trimmed bandgap reference output (5.05V to 5.15V for UC2823 at 1mA). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Power Management (PMIC) |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `UC2823DW`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files: `uc2823dw-etched.step` / `uc2823dw-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `uc2823dw.step` / `uc2823dw.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/uc2823) (14 pp, sha256 `a5390e0e8f202a71`, retrieved 2026-10-08, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (vision), consensus `claude-opus-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/uc2823dw-datasheet.pdf)