# NCP1653ADR2G

**onsemi** · AC-DC Controllers And Regulators · SOP-8

NCP1653ADR2G from onsemi, in a SOP-8. 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 | FB | input | Feedback/Shutdown pin receives feedback current IFB proportional to output voltage for regulation and protection; overvoltage protection triggers at IFB > 107% Iref and shutdown at IFB < 8% Iref. |
| 2 | Vcontrol | input | Control Voltage/Soft-Start pin voltage controls input impedance and power factor; external capacitor limits bandwidth typically below 20 Hz for unity power factor. |
| 3 | In | input | Input Voltage Sense pin sinks current Ivac proportional to RMS input voltage Vac for overpower limitation (when IS×Ivac > 3 nA²) and PFC duty cycle modulation. |
| 4 | CS | input | Input Current Sense pin monitors inductor current through external sense resistor RCS; overcurrent protection activates when sensed current IS exceeds 200 µA. |
| 5 | VM | output | Multiplier Voltage output provides voltage for PFC duty cycle modulation; external resistor RM sets input impedance and capacitor CM enables average current-mode operation. |
| 6 | GND | power_in | IC Ground connection. |
| 7 | Drv | output | Drive Output provides gate drive signal to external MOSFET with ±1.5 A peak current capability and typical rise/fall times of 88/61.5 ns. |
| 8 | VCC | power_in | Positive supply voltage with operating range 8.75 V to 18 V after startup; 13.25 V startup threshold with 4.55 V hysteresis and 18 V internal ESD protection. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `NCP1653ADR2G`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `ncp1653adr2g-etched.step` / `ncp1653adr2g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ncp1653adr2g.step` / `ncp1653adr2g.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/8588881113330278400) (21 pp, sha256 `485dd1f0df4c1c72`, retrieved 2026-09-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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/ncp1653adr2g-datasheet.pdf)