# TLV803EA43DBZR

**Texas Instruments** · Supervisor And Reset ICs · SOT-23-3

TLV803EA43DBZR from Texas Instruments, in a SOT-23-3. 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 | GND | power_in | Ground reference pin for the supervisor and the VDD monitoring circuit. |
| 2 | RESET | output | Active-low open-drain output reset signal (TLV803E) that is driven low when VDD falls below VIT- and remains low for the delay time tD after VDD rises above VIT+, so it requires an external pull-up resistor. |
| 3 | VDD | power_in | Input supply voltage monitored by the device, specified for 1.7 V to 6 V (absolute maximum 6.5 V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input threshold voltage accuracy | VIT- | -2 | 0.5 | 2 | % | TA= -40℃ to 125℃ | 8 |
| Hysteresis voltage | VHYS | 0.9 | 1.2 | 1.5 | % | Hysteresis from VIT- | 8 |
| Supply current into VDD pin | IDD |  | 0.25 | 1 | µA | VDD = 3.3 V; VDD > VIT+ | 8 |
| Supply current into VDD pin | IDD |  | 0.4 | 1.2 | µA | VDD = 6 V | 8 |
| Open drain output leakage current | Ilkg(OD) |  | 100 | 350 | nA | VDD = VPULLUP = 6 V, VDD > VIT+ | 8 |
| Low level output voltage | VOL |  |  | 300 | mV | VDD = 1.7 V, VDD < VIT-, IOUT(Sink) = 500 µA | 8 |
| Power on reset voltage | VPOR |  |  | 700 | mV | VOL ≤ 300 mV, IOUT(Sink) = 15 µA | 8 |
| Release time or reset timeout period, reset time delay variant A | tD | 130 | 200 | 270 | ms | Reset time delay variant A | 9 |
| Propagation delay from VDD falling below VIT- to RESET | tPD_HL |  |  | 50 | µs | VDD = (VIT+ + 30%) to (VIT-, 10%) | 9 |
| Input supply voltage | VDD | 1.7 |  | 6 | V |  | 6 |
| RESET pin and RESET pin voltage | VRESET, VRESET | 0 |  | 6 | V |  | 6 |
| RESET pin and RESET pin current | IRESET, IRESET | 0 |  | 5 | mA |  | 6 |
| Junction temperature (free air temperature) | TJ | -40 |  | 125 | °C |  | 6 |
| VDD pin voltage | VDD | -0.3 |  | 6.5 | V |  | 6 |
| RESET (TLV803E) voltage | RESET | -0.3 |  | 6.5 | V |  | 6 |
| Output sink and source current |  | -20 |  | 20 | mA |  | 6 |
| Operating ambient temperature | TA | -40 |  | 125 | °C |  | 6 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 6 |
| Junction-to-ambient thermal resistance (DBZ SOT23-3) | RθJA |  | 254.8 |  | °C/W |  | 7 |
| Junction-to-case (top) thermal resistance (DBZ SOT23-3) | RθJC(top) |  | 150.5 |  | °C/W |  | 7 |
| Junction-to-board thermal resistance (DBZ SOT23-3) | RθJB |  | 140.1 |  | °C/W |  | 7 |
| Junction-to-top characterization parameter (DBZ SOT23-3) | ψJT |  | 48.1 |  | °C/W |  | 7 |
| Junction-to-board characterization parameter (DBZ SOT23-3) | ψJB |  | 139.1 |  | °C/W |  | 7 |

## CAD (KiCad official)

- Symbol: `TLV803EA43DBZR`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `tlv803ea43dbzr-etched.step` / `tlv803ea43dbzr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tlv803ea43dbzr.step` / `tlv803ea43dbzr.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/tlv803e.pdf) (52 pp, sha256 `74ac4474d86c3597`, retrieved 2026-11-05, tier: manufacturer)
- **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/tlv803ea43dbzr-datasheet.pdf)