# TPS37043BJOFDDFRQ1

**Texas Instruments** · Supervisor And Reset ICs · TSOT-23-8

TPS37043BJOFDDFRQ1 from Texas Instruments, in a TSOT-23-8. 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 | VDD | power_in | Supply input; bypass with a 0.1-µF capacitor to GND, with the supply pin voltage specified at 1.7 V to 6.0 V (6.5 V absolute maximum). |
| 2 | SENSE1 | input | Connect directly to the monitored voltage; RESET1 asserts when SENSE1 falls outside the window threshold, and the input may range from 0 V to 6.0 V, leaving the pin floating if unused. |
| 3 | SENSE2 | input | Connect directly to the monitored voltage; RESET2 asserts when SENSE2 falls outside the window threshold, and the input may range from 0 V to 6.0 V, leaving the pin floating if unused. |
| 4 | GND | power_in | Ground reference for the device; the VDD supply bypass capacitor returns to this pin. |
| 5 | SENSE3 | input | Connect directly to the monitored voltage; RESET3 asserts when SENSE3 falls outside the window threshold, and the input may range from 0 V to 6.0 V, leaving the pin floating if not used. |
| 6 | RESET3 | output | Active-low, open-drain reset output that requires an external pullup resistor and asserts on an overvoltage or undervoltage fault on SENSE3; recommended sink current is 0.3 mA to 5 mA, and the output voltage is 0 V to 6.0 V. |
| 7 | RESET2 | output | Active-low, open-drain reset output that requires an external pullup resistor and asserts on an overvoltage or undervoltage fault on SENSE2; recommended sink current is 0.3 mA to 5 mA, and the output voltage is 0 V to 6.0 V. |
| 8 | RESET1 | output | Active-low, open-drain reset output that requires an external pullup resistor and asserts on an overvoltage or undervoltage fault on SENSE1; recommended sink current is 0.3 mA to 5 mA, and the output voltage is 0 V to 6.0 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSOT-23-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `TPS37043BJOFDDFRQ1`
- Footprint: `Package_TO_SOT_SMD:TSOT-23-8`
- 3D model: TSOT-23-8 (KiCad packages3D, STEP)
- 3D model files: `tps37043bjofddfrq1-etched.step` / `tps37043bjofddfrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps37043bjofddfrq1.step` / `tps37043bjofddfrq1.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8597544823137964032) (37 pp, sha256 `c212859793c929e0`, retrieved 2026-10-10, tier: lcsc)
- **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/tps37043bjofddfrq1-datasheet.pdf)