# NCP12700ADNR2G

**onsemi** · AC-DC Controllers And Regulators · MSOP-10

NCP12700ADNR2G from onsemi, in a MSOP-10. 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 | UVLO | input | Input to the standby and UVLO comparators, where a resistor divider from the supply input to ground sets the enable voltage, hysteresis is set by a 5 A pull-down current source, and an external pull-down signal can disable the controller. |
| 2 | FLT | bidirectional | Input to a window comparator with upper and lower fault thresholds, where tripping either threshold enters fault mode (permanent latch-off or a minimum 1 s auto-recovery period), and a precision current source drives an NTC to ground for over-temperature protection. |
| 3 | SS | bidirectional | Sets the soft-start ramp of the peak current limit when the controller is enabled, using an internal 15 A current source and an external capacitor to ground, with typical soft-start capacitor values of 10 nF to 100 nF. |
| 4 | RT | input | Sets the oscillator frequency and requires a resistor to ground located close to the IC, with typical RT values in the range of 10 k to 100 k. |
| 5 | COMP | passive | Provides the compensated error voltage for the PWM and skip comparators and includes an internal 5 k pull-up resistor that can be used to bias an opto-coupler transistor. |
| 6 | CS | input | Current sense input for the PWM and current limit comparators, whose input is held low for 60 ns after DRV goes high to blank leading-edge spikes, with an external low-pass filter recommended and its resistor also setting the over-power protection applied to the sense signal. |
| 7 | GND | power_in | Controller ground pin. |
| 8 | DRV | output | High-current output that drives the external MOSFET gate, with source capability of 1 A and sink capability of 2.8 A. |
| 9 | VCC | power_in | Bias supply for the controller, with an external decoupling capacitor of 1 to 10 F to ground recommended and a recommended supply voltage of 9 to 20 V. |
| 10 | VIN | power_in | Input to the high-voltage startup regulator, which sources more than 15 mA to temporarily bias VCC during startup, with a maximum high-voltage startup voltage of 120 V for MSOP10 and recommended VIN of 9 to 100 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | MSOP-10 |
| Category | Power Management (PMIC) |
| Pins | 10 |

## CAD (KiCad official)

- Symbol: `NCP12700ADNR2G`
- Footprint: `Package_SO:MSOP-10_3x3mm_P0.5mm`
- 3D model: MSOP-10 (KiCad packages3D, STEP)
- 3D model files: `ncp12700adnr2g-etched.step` / `ncp12700adnr2g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ncp12700adnr2g.step` / `ncp12700adnr2g.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/8588929145917489152) (21 pp, sha256 `e66b804acef20677`, retrieved 2026-10-09, 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/ncp12700adnr2g-datasheet.pdf)