# LM2903BIPWR

**Texas Instruments** · Comparators · TSSOP-8

LM2903BIPWR from Texas Instruments, in a TSSOP-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 | 1OUT | output | Comparator 1 open-drain output sinking up to 25mA when 1IN- exceeds 1IN+ plus input offset voltage. |
| 2 | 1IN- | input | Comparator 1 inverting input; common-mode voltage range 0V to VCC-2V; maximum differential input voltage ±38V. |
| 3 | 1IN+ | input | Comparator 1 non-inverting input; common-mode voltage range 0V to VCC-2V; maximum differential input voltage ±38V. |
| 4 | GND | power_in | Ground and negative supply reference connection. |
| 5 | 2IN+ | input | Comparator 2 non-inverting input; common-mode voltage range 0V to VCC-2V; maximum differential input voltage ±38V. |
| 6 | 2IN- | input | Comparator 2 inverting input; common-mode voltage range 0V to VCC-2V; maximum differential input voltage ±38V. |
| 7 | 2OUT | output | Comparator 2 open-drain output sinking up to 25mA when 2IN- exceeds 2IN+ plus input offset voltage. |
| 8 | VCC | power_in | Positive supply voltage; operating range 2V to 36V; total supply current 0.6-0.8mA at 5V-36V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LM2903BIPWR`
- Footprint: `Package_SO:TSSOP-8_3x3mm_P0.65mm`
- 3D model: TSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `lm2903bipwr-etched.step` / `lm2903bipwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2903bipwr.step` / `lm2903bipwr.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/lm393a) (56 pp, sha256 `ef2f6d546e5c5f65`, retrieved 2026-10-03, 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-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/lm2903bipwr-datasheet.pdf)