# MST52L33BTE

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

MST52L33BTE from MST, 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 | System ground pin. |
| 2 | VOUT | power_out | Output pin of the fixed-voltage LDO; the output current is rated up to 150 mA and output voltage accuracy is ±2% of VOUTNOM. |
| 3 | VIN | power_in | Input pin; the input voltage range is 3 V to 24 V, with an absolute maximum VIN to GND of 30 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MST |
| 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 |
|---|---|---|---|---|---|---|---|
| Input voltage | VIN | 3 |  | 24 | V | no-load loss | 3 |
| Quiescent current | IGND |  |  | 3 | μA | VIN=12V, no-load loss | 3 |
| Output voltage tolerance (printed ±2%, VOUTNOM×0.98 to VOUTNOM×1.02) | VOUT | -2 |  | 2 | % | VIN=12V, IOUT=10mA | 3 |
| Load regulation | ΔVOUT |  | 45 | 80 | mV | At VIN= 10V, the output current goes from 1mA to 150mA | 3 |
| Dropout voltage (MST52L33B) |  |  | 800 | 990 | mV | 150mA | 3 |
| Dropout voltage (MST52L33B) |  |  | 500 | 700 | mV | 100mA | 3 |
| Input voltage (absolute maximum, VIN ~ GND) | VIN |  |  | 30 | V |  | 3 |
| Output voltage (absolute maximum, VOUT ~ GND) | VOUT |  |  | 12 | V |  | 3 |
| Working temperature | Tw | -20 |  | 70 | ℃ |  | 3 |
| Storage temperature | Tc | -50 |  | 125 | ℃ |  | 3 |
| Welding temperature | Th |  |  | 260 | ℃ |  | 3 |
| ESD HBM (Human Body Model) |  |  |  | 4 | kV |  | 3 |
| ESD MM (Mechanical Mode) |  |  |  | 100 | V |  | 3 |
| Output voltage (nominal preset for the 33 variant) | VOUT |  | 3.3 |  | V |  | 1 |
| Maximum output current (IOUT_MAX) | IOUT_MAX |  | 150 |  | mA | Maximum Output Current | 3 |
| Line regulation | ΔVOUT x100/ΔVIN x VOUT |  | 0.15 |  | %/V | When the output is 10mA, the input voltage is VOUT+2V to 24V | 3 |
| Short-circuit current | ISHORT |  | 100 |  | mA | Output short circuit current to ground | 3 |

## CAD (KiCad official)

- Symbol: `MST52L33BTE`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `mst52l33bte-etched.step` / `mst52l33bte-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mst52l33bte.step` / `mst52l33bte.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MST datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588904139618836480) (10 pp, sha256 `20beffe12f8505f7`, 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/mst52l33bte-datasheet.pdf)