# TSM1052

**STMicroelectronics** · Battery Management · SOT-23-6

TSM1052 from STMicroelectronics, in a SOT-23-6. 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 | Vctrl | input | Inverting input of the voltage control loop operational amplifier, connected to the feedback voltage divider sensing the output voltage. |
| 2 | GND | power_in | Ground reference for all voltages and return path for device bias current. |
| 3 | OUT | output | Open-drain output capable of sinking up to 100 mA, transmitting error signal from both voltage and current control loops to the optocoupler. |
| 4 | Ictrl | input | Non-inverting input of the current control loop operational amplifier, connected directly to the current sense resistor. |
| 5 | Vsense | input | Inverting input of the current control loop operational amplifier, connected to the current sense resistor through a decoupling resistor with internal reference at -200 mV. |
| 6 | Vcc | power_in | Supply voltage input with operating range from 1.7 V to 18 V, requiring a 0.1 µF bypass capacitor to ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `TSM1052`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `tsm1052-etched.step` / `tsm1052-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tsm1052.step` / `tsm1052.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884990444232704) (15 pp, sha256 `0f9e8694321ceebf`, retrieved 2026-10-03, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/tsm1052-datasheet.pdf)