# LMP8481MMX-H

**Texas Instruments** · Current Sense Amplifiers · VSSOP-8

LMP8481MMX-H from Texas Instruments, in a VSSOP-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 | RSP | input | Positive current-sense input, which sees the common-mode voltage of 4.0 V to 76 V and must stay at or above 4.0 V for valid output. |
| 2 | VCC | power_in | Positive supply voltage, specified from 4.5 V to 76 V and decoupled to GND with a 0.1 µF capacitor placed close to the pin. |
| 3 | NC | unconnected | No internal connection; the pin is not connected inside the device. |
| 4 | GND | power_in | Ground reference for the device, and the reference for the input common-mode and output voltage limits. |
| 5 | VOUT | output | Buffered voltage output with a maximum of VCC − 250 mV or 13.7 V (whichever is smaller) and an absolute maximum of the lesser of VCC + 0.3 V or +20 V; output source/sink current is rated to 20 mA absolute maximum. |
| 6 | REFB | input | Reference voltage B input that sets the output zero-level together with REFA (LMP8481 only); each VREF pin is limited to VCC or 12 V (whichever is smaller), and the average of the two VREF pins is limited to VCC − 1.5 V or 6 V (whichever is smaller). Tie to GND for a ground-referenced output. |
| 7 | REFA | input | Reference voltage A input that sets the output zero-level together with REFB (LMP8481 only); each VREF pin is limited to VCC or 12 V (whichever is smaller), and the average of the two VREF pins is limited to VCC − 1.5 V or 6 V (whichever is smaller). Tie to GND for a ground-referenced output. |
| 8 | RSN | input | Negative current-sense input, which sees the common-mode voltage of 4.0 V to 76 V and must stay at or above 4.0 V for valid output. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `LMP8481MMX-H`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `lmp8481mmx-h-etched.step` / `lmp8481mmx-h-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lmp8481mmx-h.step` / `lmp8481mmx-h.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/lmp8481) (32 pp, sha256 `647bd3a212d2fefb`, 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/lmp8481mmx-h-datasheet.pdf)