# TLV757

**Texas Instruments** · LDO regulator · SOT-23-5

Low-dropout linear regulator that delivers 1 A with only about 200 mV of dropout at full load, in a small SOT-23-5. A fast transient response holds the output steady under sudden load steps, an EN pin gates it, and fixed-output order codes cover the common logic rails. Internal current limit and thermal shutdown protect it. A cheap, capable point-of-load LDO for cleaning up a rail or dropping a slightly higher supply to a fixed logic voltage.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | IN | power_in | Input supply pin, 1.45V to 5.5V. Requires a 1µF or larger ceramic capacitor from this pin to ground (effective capacitance >0.47µF). |
| 2 | GND | power_in | Ground reference pin. |
| 3 | EN | input | Enable pin. Drive above V_HI (≥1V typ) to turn on the regulator; drive below V_LO (≤0.3V typ) to place the LDO into shutdown mode. Absolute max 6V. |
| 4 | NC | unconnected | No internal connection. |
| 5 | OUT | power_out | Regulated output voltage pin, fixed 0.6V-5.0V depending on ordering option, 1A max. Requires a 1µF-200µF ceramic capacitor (effective >0.47µF) from this pin to ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Type | Low-dropout regulator (LDO) |
| Output current | 1 A |
| Dropout | ~200 mV at 1 A |
| Output | Fixed (order code) |
| Enable | EN pin |
| Protection | Current limit, thermal shutdown |
| Supply | 1.5-5.5 V |
| Package | SOT-23-5 |

## Ordering variants

Same part, different packaging or reel option.

- `TLV75709PDBVR (0.9 V)`
- `TLV75733PDBVR (3.3 V)`
- `TLV75750PDBVR (5.0 V)`

## CAD (KiCad official)

- Symbol: `Regulator_Linear2:TLV75709PDBV (KiCad official)`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `tlv757-etched.step` / `tlv757-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tlv757.step` / `tlv757.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/lit/ds/symlink/tlv757p.pdf) (41 pp, sha256 `87121f5cd0bcdb27`, retrieved 2026-08-17, tier: manufacturer)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/tlv757-datasheet.pdf)