# HT8089ARTZ

**HTCSEMI** · DC-DC Converters · SOT-23-5

HT8089ARTZ from HTCSEMI, in a SOT-23-5. 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 | Chip enable pin: drive EN above 1.5V to turn the part on and below 0.3V to turn it off, and do not leave it floating. |
| 2 | GND | power_in | Ground pin. |
| 3 | SW | output | Power switch output connected to the inductor; it is the common drain node of the internal P-ch and N-ch MOSFET switches. |
| 4 | VIN | power_in | Power supply input that must be closely decoupled to GND with a 10µF or greater ceramic capacitor. |
| 5 | FB | input | Output voltage feedback pin; an internal resistive divider scales the output for comparison with the internal 0.6V reference. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HTCSEMI |
| Package | SOT-23-5 |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Voltage Range |  | 2.5 |  | 5.5 | V |  | 3 |
| Regulated Feedback Voltage |  | 0.588 | 0.6 | 0.612 | V | TA = 25°C | 3 |
| Reference Voltage Line Regulation |  |  | 0.04 | 0.4 | %/V | Vin = 2.5V to 6.0V | 3 |
| Output Voltage Line Regulation |  |  | 0.04 | 0.4 | % | VIN = 2.5V to 6.0V | 3 |
| Input DC Supply Current |  |  | 150 | 300 | µA | FB = 90%, Iload=0mA | 3 |
| Input DC Supply Current |  |  | 40 | 70 | µA | FB= 105%, Iload=0mA | 3 |
| Input DC Supply Current (shutdown) |  |  | 0.1 | 1 | µA | VEN = 0V, VIN=4.2V | 3 |
| EN Threshold |  | 0.3 | 1 | 1.5 | V |  | 3 |
| EN Leakage Current |  | -1 | 0.01 | 1 | µA |  | 3 |
| SW Leakage Current |  | -1 | 0.01 | 1 | µA | VEN=0V,VIN=Vsw=5V | 3 |
| Input Supply Voltage (absolute maximum) |  | -0.3 |  | 6 | V |  | 2 |
| EN, FB Voltages (absolute maximum) |  | -0.3 |  | 6 | V |  | 2 |
| SW Voltage (absolute maximum) |  | -0.3 |  |  | V | upper limit printed as (Vin+0.3V), not a fixed number | 2 |
| Peak SW Sink and Source Current (absolute maximum) |  |  |  | 3 | A |  | 2 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 2 |
| Lead Temperature (Soldering) |  |  |  | 300 | °C | Soldering, 10s | 2 |
| Operating Temperature Range |  | -40 |  | 85 | °C |  | 2 |
| Thermal Resistance (junction to ambient) |  |  | 250 |  | °C/W | Note 2: TJ = TA + PD x (250°C/W) | 3 |

## CAD (KiCad official)

- Symbol: `HT8089ARTZ`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `ht8089artz-etched.step` / `ht8089artz-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ht8089artz.step` / `ht8089artz.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HTCSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590353796896219137) (7 pp, sha256 `7decaf6eca1b9985`, 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/ht8089artz-datasheet.pdf)