# LYF98001

**POWLICON(宝砾微)** · DC-DC Converters · SOT23-5L

LYF98001 from POWLICON(宝砾微), in a SOT23-5L. 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 | EN | input | Enable pin: drive high to enable the part and low to disable it; the electrical table gives EN input high voltage of 1.2V and input low voltage of 0.5V. |
| 2 | GND | power_in | Ground reference pin for the regulator. |
| 3 | SW | output | Inductor connection; connect an inductor between SW and the regulator output. |
| 4 | VIN | power_in | Supply voltage input; the operating input range is 2.6V to 5.5V and the absolute maximum input voltage is 8V. |
| 5 | FB | input | Feedback input: connect an external resistor divider from the output to FB and GND to set the output between 0.6V and VIN, with a 0.6V feedback reference. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | POWLICON(宝砾微) |
| Package | SOT23-5L |
| 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 |
|---|---|---|---|---|---|---|---|
| Max input voltage |  |  |  | 8 | V |  | 3 |
| Max operating junction temperature (TJ) | TJ |  |  | 125 | °C |  | 3 |
| Ambient temperature (TA) | TA | -40 |  | 85 | °C |  | 3 |
| Maximum power dissipation |  |  |  | 400 | mW |  | 3 |
| Storage temperature (TS) | TS | -40 |  | 150 | °C |  | 3 |
| Lead temperature & time |  |  |  | 260 | °C | 10 s | 3 |
| ESD (HBM) |  | 2000 |  |  | V | HBM | 3 |
| Input voltage range | VIN | 2.6 |  | 5.5 | V |  | 4 |
| Input over voltage threshold | VOVP | 6.1 |  | 6.5 | V |  | 4 |
| Feedback voltage | VREF | 0.588 | 0.6 | 0.612 | V | VIN=5V | 4 |
| Quiescent current | IQ |  |  | 55 | uA | Active, VFB=0.65, No Switching | 4 |
| Feedback leakage current | IFB |  | 0.1 | 1 | uA |  | 4 |
| Shutdown input current | ISHUTDOWN |  |  | 1 | uA | EN=0V | 4 |
| SW leakage current | ISWLK |  |  | 1 | uA | VIN=6V, VSW=0 or 6V, EN=0V | 4 |
| EN leakage current | IENLK |  |  | 1 | uA |  | 4 |
| Line regulation | LNR |  | 0.1 | 0.2 | %/V | VIN=2.6V to 5.5V | 4 |
| Load regulation | LDR |  | 0.1 | 0.2 | %/A | IOUT=0.01 to 1A | 4 |
| PMOS Rdson | RDSON_P |  | 250 | 350 | mΩ |  | 4 |
| NMOS Rdson | RDSON_N |  | 150 | 250 | mΩ |  | 4 |
| Under voltage lockout | VUVLO | 1.9 | 2.1 | 2.3 | V |  | 4 |
| UVLO hysteresis | VUVLO_HY |  | 100 |  | mV |  | 4 |
| EN input high voltage | VH_EN | 1.2 |  |  | V |  | 4 |
| EN input low voltage | VL_EN |  |  | 0.5 | V |  | 4 |
| Switching frequency | FSOC |  | 2 |  | MHz |  | 4 |
| Peak current limit | ILIMIT |  | 2.3 |  | A |  | 4 |
| Thermal shutdown temp | TSD |  | 160 |  | °C |  | 4 |
| Thermal shutdown hysteresis | TSH |  | 15 |  | °C |  | 4 |

## CAD (KiCad official)

- Symbol: `LYF98001`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT23-5L (KiCad packages3D, STEP)
- 3D model files: `lyf98001-etched.step` / `lyf98001-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lyf98001.step` / `lyf98001.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [POWLICON(宝砾微) datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602901732170997760) (13 pp, sha256 `9f01551f22c10436`, 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/lyf98001-datasheet.pdf)