# NCP163ASN180T1G

**onsemi** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L

NCP163ASN180T1G from onsemi, in a SOT-23-5L. 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 | IN | power_in | Input voltage supply pin; the operating input voltage range is 2.2 V to 5.5 V and the absolute maximum input voltage is -0.3 V to 6 V. |
| 2 | GND | power_in | Common ground connection. |
| 3 | EN | input | Chip enable: applying VEN < 0.4 V disables the regulator and pulling VEN > 1.2 V enables the LDO; absolute maximum chip enable input is -0.3 V to 6 V. |
| 4 | NC | unconnected | Not connected; can be tied to the ground plane. |
| 5 | OUT | power_out | Regulated output voltage; the output should be bypassed with a small 1 µF ceramic capacitor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-23-5L |
| Category | Power Management (PMIC) |
| Pins | 5 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Input Voltage | VIN | 2.2 |  | 5.5 | V |  | 3 |
| Output Voltage Accuracy | VOUT | -2 |  | 2 | % | VIN = (VOUT(NOM) + 1 V) to 5.5 V; SOT23-5L Package Only | 3 |
| Load Regulation | LoadReg |  | 0.008 | 0.015 | %/mA | IOUT = 1mA to 250mA; SOT23-5L | 3 |
| Dropout Voltage | VDO |  | 205 | 280 | mV | IOUT = 250 mA; VOUT(NOM) = 1.8 V; SOT23-5L Package | 3 |
| Output Current Limit | ICL | 250 | 700 |  | mA | VOUT = 90% VOUT(NOM) | 3 |
| Quiescent Current | IQ |  | 12 | 20 | µA | IOUT = 0 mA | 3 |
| Shutdown Current | IDIS |  | 0.01 | 1 | µA | VEN ≤ 0.4 V, VIN = 4.8 V | 3 |
| EN Input Voltage High | VENH | 1.2 |  |  | V | EN Input Voltage “H” | 3 |
| EN Input Voltage Low | VENL |  |  | 0.4 | V | EN Input Voltage “L” | 3 |
| EN Pull Down Current | IEN |  | 0.2 | 0.5 | µA | VEN = 4.8 V | 3 |
| Line Transient (rising step) | TranLINE | -1 |  |  | mV | VIN = (VOUT(NOM) + 1 V) to (VOUT(NOM) + 1.6 V) in 30 µs, IOUT = 1 mA | 4 |
| Line Transient (falling step) | TranLINE |  |  | 1 | mV | VIN = (VOUT(NOM) + 1.6 V) to (VOUT(NOM) + 1 V) in 30 µs, IOUT = 1 mA | 4 |
| Load Transient (1 mA to 200 mA) | TranLOAD | -40 |  |  | mV | IOUT = 1 mA to 200 mA in 10 µs | 4 |
| Load Transient (200 mA to 1 mA) | TranLOAD |  |  | 40 | mV | IOUT = 200 mA to 1 mA in 10 µs | 4 |
| Input Voltage | VIN | -0.3 |  | 6 | V | Input Voltage (Note 1) | 2 |
| Output Voltage | VOUT | -0.3 |  | 6 | V | −0.3 to VIN + 0.3, max. 6 V | 2 |
| Chip Enable Input | VCE | -0.3 |  | 6 | V | Chip Enable Input | 2 |
| Maximum Junction Temperature | TJ |  |  | 150 | °C |  | 2 |
| Storage Temperature | TSTG | -55 |  | 150 | °C |  | 2 |
| ESD Capability, Human Body Model | ESDHBM |  |  | 2000 | V | Human Body Model (Note 2) | 2 |
| ESD Capability, Machine Model | ESDMM |  |  | 200 | V | Machine Model (Note 2) | 2 |
| ESD Capability, Charged Device Model | ESDCDM |  |  | 1000 | V | Charged Device Model (Note 2) | 2 |
| Operating Junction Temperature | TJ | -40 |  | 125 | °C | Electrical characteristics temperature range | 3 |
| Thermal Resistance, Junction-to-Air, SOT23-5 | RJA |  | 218 |  | °C/W | SOT23-5, JEDEC board (Note 3) | 3 |
| Line Regulation | LineReg |  | 0.02 |  | %/V | VOUT(NOM) + 1 V ≤ VIN ≤ 5.5 V | 3 |
| Turn-On Time, A Option |  |  | 120 |  | µs | COUT = 1 µF, from assertion of VEN to VOUT = 95% VOUT(NOM); A option | 3 |
| Power Supply Rejection Ratio, 100 Hz | PSRR |  | 91 |  | dB | IOUT = 20 mA, f = 100 Hz | 3 |
| Power Supply Rejection Ratio, 1 kHz | PSRR |  | 92 |  | dB | IOUT = 20 mA, f = 1 kHz | 3 |
| Power Supply Rejection Ratio, 10 kHz | PSRR |  | 85 |  | dB | IOUT = 20 mA, f = 10 kHz | 3 |
| Power Supply Rejection Ratio, 100 kHz | PSRR |  | 60 |  | dB | IOUT = 20 mA, f = 100 kHz | 3 |
| Short Circuit Current | ISC |  | 690 |  | mA | VOUT = 0 V | 3 |
| Output Voltage Noise (1 mA) | VN |  | 8 |  | µVRMS | f = 10 Hz to 100 kHz, IOUT = 1 mA | 4 |
| Output Voltage Noise (250 mA) | VN |  | 6.5 |  | µVRMS | f = 10 Hz to 100 kHz, IOUT = 250 mA | 4 |
| Thermal Shutdown Threshold (rising) | TSDH |  | 160 |  | °C | Temperature rising | 4 |
| Thermal Shutdown Threshold (falling) | TSDL |  | 140 |  | °C | Temperature falling | 4 |
| Active Output Discharge Resistance | RDIS |  | 280 |  | Ω | VEN < 0.4 V, Version A only | 4 |

## CAD (KiCad official)

- Symbol: `NCP163ASN180T1G`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5L (KiCad packages3D, STEP)
- 3D model files: `ncp163asn180t1g-etched.step` / `ncp163asn180t1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ncp163asn180t1g.step` / `ncp163asn180t1g.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/8588876800323145728) (25 pp, sha256 `f5a7f9bae123b8f8`, retrieved 2026-10-20, 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/ncp163asn180t1g-datasheet.pdf)