# SD6303E33C

**SHOUDING** · DC-DC Converters · SOT-89

SD6303E33C from SHOUDING, in a SOT-89. 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 | Power ground pin (电源地), the ground reference for the SD6303 boost converter. |
| 2 | VOUT | input | Input voltage pin supplying the device; the datasheet gives a maximum of 7 V on VOUT and VLX. |
| 3 | LX | output | Switching signal output that drives the boost inductor; the maximum LX pin current is 1000 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SHOUDING |
| Package | SOT-89 |
| 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 | △VOUT | -2.5 |  | 2.5 | % |  | 6 |
| Current limit | ILIMIT | 600 | 800 | 1000 | mA |  | 6 |
| Maximum oscillation frequency | FMAX |  |  | 300 | KHz |  | 6 |
| Maximum duty cycle | DCOSC |  |  | 83 | % |  | 6 |
| Soldering temperature range | TSD | 230 |  | 240 | °C | 时间少于 30 秒 | 5 |
| Maximum voltage at VOUT and VLX pins | VMAX |  |  | 7 | V |  | 5 |
| Voltage range at EN pin | VMIN_MAX | -0.3 |  |  | V |  | 5 |
| Maximum LX pin current | ILX_MAX |  |  | 1000 | mA |  | 5 |
| Maximum power dissipation, SOT-89-3 package | PSOT-89-3 |  |  | 0.5 | W | SOT-89-3 封装 | 5 |
| Operating temperature range | TA | -20 |  | 85 | °C |  | 5 |
| Storage temperature range | TSTG | -40 |  | 125 | °C |  | 5 |
| ESD withstand voltage (human body model) | VESD |  |  | 2000 | V | 人体模型 | 5 |
| Start-up voltage | VSTART |  | 0.8 |  | V | ILOAD =1mA, VIN 从 0V 到 2V | 6 |
| Hold voltage | VHOLD |  | 0.6 |  | V | ILOAD=1mA, VIN 从 2V 到 0V | 6 |
| No-load input current | IIN0 |  | 15 |  | uA | VIN =1.8V，VOUT =3.3V | 6 |
| Standby input current | IINQ |  | 1 |  | uA | 无负载，EN 为低电平 | 6 |
| EN high input current |  |  | 0.1 |  | uA |  | 6 |
| EN low input current |  |  | -0.1 |  | uA |  | 6 |
| EN low voltage |  |  | 0.2 |  | V |  | 6 |

## CAD (KiCad official)

- Symbol: `SD6303E33C`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `sd6303e33c-etched.step` / `sd6303e33c-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sd6303e33c.step` / `sd6303e33c.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SHOUDING datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588911841070493696) (13 pp, sha256 `e6c41c5dd020a572`, retrieved 2026-10-17, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/sd6303e33c-datasheet.pdf)