# TMCS1101A1BQDR

**Texas Instruments** · Current Sensors · SOIC-8

TMCS1101A1BQDR from Texas Instruments, in a SOIC-8. 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 | IN+ | input | Current-sense input; the measured current enters the internal 1.8 mΩ conductor through IN+ and IN- and the sensor treats current flowing into IN+ as positive, with input voltages limited to ±600 VPK relative to GND (pin 5). |
| 2 | IN+ | input | Second current-sense input pin on the same internal conductor as pin 1; it is printed as a separate IN+ pin in the pin table and carries the same ±600 VPK input voltage limit relative to GND. |
| 3 | IN- | input | Current-sense return input on the same internal conductor as pin 4; the input voltage is limited to ±600 VPK relative to GND (pin 5) and the continuous RMS current rating is 30 A at 25°C, derated with temperature. |
| 4 | IN- | input | Second current-sense return input pin on the same internal conductor as pin 3; it carries the same ±600 VPK input voltage limit relative to GND and the same derated continuous RMS current rating. |
| 5 | GND | power_in | Ground reference for the low-voltage side; the input voltage ratings VIN+ and VIN- are specified relative to this pin, and the output swing to ground is limited to about 5-10 mV at a 10 kΩ load. |
| 6 | NC | unconnected | No internal connection; the pin tolerates capacitive or resistive connections to GND or VS, the datasheet recommends shorting it to GND where acceptable, and its absolute maximum voltage range is GND - 0.3 V to VS + 0.3 V. |
| 7 | VOUT | output | Analog output voltage proportional to input current with zero-current level of 0.5 × VS for the B variants and 0.1 × VS for the U variants; it swings to within about 0.02-0.1 V of VS and 5-10 mV of GND at a 10 kΩ load and is stable up to 1 nF capacitive load. |
| 8 | VS | power_in | Low-voltage analog supply, with recommended operating range 3 V to 5.5 V for the A1-A3 variants and 4.5 V to 5.5 V for the A4 variants, absolute maximum 6 V, and a 0.1 µF low-ESR decoupling capacitor placed close to the VS and GND pins. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Magnetic Sensors |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `TMCS1101A1BQDR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `tmcs1101a1bqdr-etched.step` / `tmcs1101a1bqdr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmcs1101a1bqdr.step` / `tmcs1101a1bqdr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tmcs1101) (46 pp, sha256 `e9082d3b71c841e2`, retrieved 2026-10-08, 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/tmcs1101a1bqdr-datasheet.pdf)