# LM4040DIM7-5.0

**Texas Instruments** · Voltage Reference · SC-70-5

LM4040DIM7-5.0 from Texas Instruments, in a SC-70-5. 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 | Anode | power_in | Anode pin, which the datasheet says is normally grounded in the shunt-reference application. |
| 2 | * | passive | Must be left floating or connected to pin 1 (anode), because a parasitic Schottky diode sits between pin 1 and this chip-attach contact; TI recommends connecting it to the anode in high-EMI or high-frequency switching environments. |
| 3 | Cathode | bidirectional | Parallel current / output voltage pin; the reverse current must stay between IRMIN (74 µA for the LM4040-N-5.0 per section 5.3) and IRMAX (15 mA), typically set by an external series resistor. |
| 4 | NC | unconnected | No connection. |
| 5 | NC | unconnected | No connection. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SC-70-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `LM4040DIM7-5.0`
- Footprint: `Package_TO_SOT_SMD:SOT-353_SC-70-5`
- 3D model: SC-70-5 (KiCad packages3D, STEP)
- 3D model files: `lm4040dim7-5-0-etched.step` / `lm4040dim7-5-0-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm4040dim7-5-0.step` / `lm4040dim7-5-0.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/lm4040-n) (84 pp, sha256 `5655b017c6397138`, retrieved 2026-10-07, 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/lm4040dim7-5-0-datasheet.pdf)