# NCP3063DR2G

**onsemi** · DC-DC Converters · SOIC-8

NCP3063DR2G from onsemi, 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 | Switch Collector | output | Internal Darlington switch collector, rated 0 to +40 V, with switch current up to 1.5 A. |
| 2 | Switch Emitter | output | Internal Darlington switch emitter, rated −0.6 V to VCC when the transistor is off. |
| 3 | Timing Capacitor | input | Oscillator timing capacitor connection (CT) that sets the switching frequency; the pin voltage is limited to −0.2 V to +1.4 V. |
| 4 | GND | power_in | Ground pin for all internal circuits and the reference for the maximum ratings. |
| 5 | Comparator Inverting Input | input | Inverting input of the internal comparator, rated −0.2 V to VCC. |
| 6 | VCC | power_in | Voltage supply pin, rated 0 to +40 V. |
| 7 | Ipk Sense | input | Peak current sense input that monitors the voltage drop across an external resistor to limit peak current; rated −0.2 V to VCC + 0.2 V and the current limit sense voltage is 200 mV typical. |
| 8 | N.C. | unconnected | Pin not connected. |

## Key specifications

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

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Oscillator frequency | fOSC | 110 | 150 | 190 | kHz | VPin 5 = 0 V, CT = 2.2 nF, TJ = 25°C | 4 |
| Discharge to charge current ratio | IDISCHG / ICHG | 5.5 | 6 | 6.5 | − | Pin 7 to VCC, TJ = 25°C | 4 |
| Current limit sense voltage | VIPK(Sense) | 165 | 200 | 235 | mV | TJ = 25°C (Note 6) | 4 |
| Threshold voltage line regulation | REGLINE | -6 | 2 | 6 | mV | VCC = 5.0 V to 40 V | 4 |
| Comparator input bias current | ICII | -1000 | -100 | 1000 | nA | Vin = Vth | 4 |
| Threshold voltage tolerance (NCP3063 variant; NCP3063B/NCV3063 differ) | VTH | -1.5 |  | 1.5 | % |  | 4 |
| Operating junction temperature range (NCP3063) | TJ | 0 |  | 70 | °C | NCP3063 variant (Note 3) | 3 |
| Supply voltage | VCC | 0 |  | 40 | V | Pin 6 | 3 |
| Comparator inverting input voltage | VCII | -0.2 |  |  | V | Pin 5; upper limit printed as + VCC | 3 |
| Darlington switch collector voltage | VSWC | 0 |  | 40 | V | Pin 1 | 3 |
| Darlington switch emitter voltage (transistor OFF) | VSWE | -0.6 |  |  | V | Pin 2, transistor OFF; upper limit printed as + VCC | 3 |
| Darlington switch collector to emitter voltage | VSWCE | 0 |  | 40 | V | Pin 1-2 | 3 |
| Darlington switch current | ISW |  |  | 1.5 | A |  | 3 |
| Ipk sense voltage | VIPK | -0.2 |  |  | V | Pin 7; upper limit printed as VCC + 0.2 | 3 |
| Timing capacitor voltage | VTCAP | -0.2 |  | 1.4 | V | Pin 3 | 3 |
| Storage temperature range | TSTG | -65 |  | 150 | °C |  | 3 |
| Maximum junction temperature | TJ MAX |  |  | 150 | °C |  | 3 |
| Thermal resistance, junction-to-air, SOIC-8 | RJA |  | 180 |  | °C/W | SOIC-8 package | 3 |
| Thermal resistance, junction-to-case, SOIC-8 | RJC |  | 45 |  | °C/W | SOIC-8 package | 3 |

## CAD (KiCad official)

- Symbol: `NCP3063DR2G`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ncp3063dr2g-etched.step` / `ncp3063dr2g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ncp3063dr2g.step` / `ncp3063dr2g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8581449641558540288) (19 pp, sha256 `706fe13c74fc8342`, retrieved 2026-10-17, tier: lcsc)
- **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/ncp3063dr2g-datasheet.pdf)