SK6218-18NR

Suntek · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23

SK6218-18NR from Suntek, in a SOT-23. 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	GND	power_in	Ground pin (the datasheet gives no further electrical limits for this pin).
2	VOUT	power_out	Regulated output voltage pin, selectable from 1.8V to 3.6V in 0.1V steps, with output current rated at 300mA and VOUT limited to VSS-0.3V to VIN+0.3V.
3	VIN	power_in	Input voltage pin, with an absolute maximum VIN of 8V and a 1.6V to 8V input range stated for line regulation.

Key specifications

Parameter	Value
Manufacturer	Suntek
Package	SOT-23
Category	Power Management (PMIC)
Pins	3

Electrical characteristics

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

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Output voltage accuracy		-2		2	%		1
Line Regulation	△ Vout1/(Vin·Vout)		0.05	0.2	%/V	1.6V≤Vin≤8V Iout=40mA	4
Load Regulation	△ Vout/ΔIout		12	30	mV	Vin= Vout+1V 1.0mA≤Iout≤80mA	4
Output voltage temperature coefficient	△ Vout/(Ta·Vout)	-100		100	ppm/℃	Iout=30mA 0℃≤Ta≤70℃	4
Supply Current	Iss		5	10	uA		4
Input Voltage	Vin		6	8	V		4
Low dropout (1.8V variant, Vout 1.8 to 2)	Vdrop		0.39	0.53	V	1.8 ≤ Vout ≤ 2, Iout=100 mA	4
Input Voltage (absolute maximum)	VIN			8	V		4
Output Current (absolute maximum)	IOUT			300	mA	*IOUT=Pd/(VIN-VOUT)	4
Operating Temperature Range	Topr	-40		85	℃		4
Storage Temperature Range	Tstg	-55		125	℃		4
Power Dissipation SOT-23	Pd			0.2	W	SOT-23	4
Output Current	Iout		300		mA	Vin-Vout=1V	4
PSRR	PSRR		50		dB	F=1KHz Vin=Vout+1V	4
Output Noise	EN		30		uVrms	BW=10Hz～100KHz	4

CAD (KiCad official)

Symbol: SK6218-18NR
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)
3D model files: sk6218-18nr-etched.step / sk6218-18nr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sk6218-18nr.step / sk6218-18nr.glb are the bare package body.

Provenance

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

Datasheet: Suntek datasheet (5 pp, sha256 2c212c082f891b0a, retrieved 2026-10-18, 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

# SK6218-18NR

**Suntek** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23

SK6218-18NR from Suntek, in a SOT-23. 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 | GND | power_in | Ground pin (the datasheet gives no further electrical limits for this pin). |
| 2 | VOUT | power_out | Regulated output voltage pin, selectable from 1.8V to 3.6V in 0.1V steps, with output current rated at 300mA and VOUT limited to VSS-0.3V to VIN+0.3V. |
| 3 | VIN | power_in | Input voltage pin, with an absolute maximum VIN of 8V and a 1.6V to 8V input range stated for line regulation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Suntek |
| Package | SOT-23 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage accuracy |  | -2 |  | 2 | % |  | 1 |
| Line Regulation | △ Vout1/(Vin·Vout) |  | 0.05 | 0.2 | %/V | 1.6V≤Vin≤8V Iout=40mA | 4 |
| Load Regulation | △ Vout/ΔIout |  | 12 | 30 | mV | Vin= Vout+1V 1.0mA≤Iout≤80mA | 4 |
| Output voltage temperature coefficient | △ Vout/(Ta·Vout) | -100 |  | 100 | ppm/℃ | Iout=30mA 0℃≤Ta≤70℃ | 4 |
| Supply Current | Iss |  | 5 | 10 | uA |  | 4 |
| Input Voltage | Vin |  | 6 | 8 | V |  | 4 |
| Low dropout (1.8V variant, Vout 1.8 to 2) | Vdrop |  | 0.39 | 0.53 | V | 1.8 ≤ Vout ≤ 2, Iout=100 mA | 4 |
| Input Voltage (absolute maximum) | VIN |  |  | 8 | V |  | 4 |
| Output Current (absolute maximum) | IOUT |  |  | 300 | mA | *IOUT=Pd/(VIN-VOUT) | 4 |
| Operating Temperature Range | Topr | -40 |  | 85 | ℃ |  | 4 |
| Storage Temperature Range | Tstg | -55 |  | 125 | ℃ |  | 4 |
| Power Dissipation SOT-23 | Pd |  |  | 0.2 | W | SOT-23 | 4 |
| Output Current | Iout |  | 300 |  | mA | Vin-Vout=1V | 4 |
| PSRR | PSRR |  | 50 |  | dB | F=1KHz Vin=Vout+1V | 4 |
| Output Noise | EN |  | 30 |  | uVrms | BW=10Hz～100KHz | 4 |

## CAD (KiCad official)

- Symbol: `SK6218-18NR`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `sk6218-18nr-etched.step` / `sk6218-18nr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sk6218-18nr.step` / `sk6218-18nr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Suntek datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590904075947233280) (5 pp, sha256 `2c212c082f891b0a`, retrieved 2026-10-18, 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/sk6218-18nr-datasheet.pdf)