# ISO5451QDWRQ1

**Texas Instruments** · Isolators - Gate Drivers · SOIC-16-300mil

ISO5451QDWRQ1 from Texas Instruments, in a SOIC-16-300mil. 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 | VEE2 | power_in | Output negative supply; connect to GND2 for unipolar supply application, and VEE2 is specified at -15 V to 0 V with respect to GND2. |
| 2 | DESAT | input | Desaturation voltage input for IGBT collector-emitter overvoltage detection, rated from GND2 - 0.3 V to VCC2 + 0.3 V. |
| 3 | GND2 | power_in | Gate drive common; connect to the IGBT emitter. |
| 4 | NC | unconnected | Not connected. |
| 5 | VCC2 | power_in | Most positive output supply potential, specified at 15 V to 30 V with respect to GND2. |
| 6 | OUT | output | Gate drive voltage output to the IGBT gate, clamped to VEE2 when the output supply is absent by the active output pull-down. |
| 7 | CLAMP | output | Active Miller clamp output for unipolar supply operation, designed to sink Miller current up to 2 A when the gate voltage is below 2 V. |
| 8 | VEE2 | power_in | Output negative supply; connect to GND2 for unipolar supply application, and VEE2 is specified at -15 V to 0 V with respect to GND2. |
| 9 | GND1 | power_in | Input ground. |
| 10 | IN+ | input | Non-inverting gate drive voltage control input, CMOS-compatible with VIH of 0.7 x VCC1 minimum and VIL of 0.3 x VCC1 maximum. |
| 11 | IN- | input | Inverting gate drive voltage control input, CMOS-compatible with VIH of 0.7 x VCC1 minimum and VIL of 0.3 x VCC1 maximum. |
| 12 | RDY | output | Power-good output, driven high when both input and output supplies are good and low when either side has insufficient supply. |
| 13 | FLT | output | Fault output, low-active during a DESAT condition and latched until reset via RST. |
| 14 | RST | input | Reset input; a low pulse of at least 800 ns clears the fault latch. |
| 15 | VCC1 | power_in | Positive input supply, specified at 3 V to 5.5 V. |
| 16 | GND1 | power_in | Input ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Power Management (PMIC) |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `ISO5451QDWRQ1`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files: `iso5451qdwrq1-etched.step` / `iso5451qdwrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `iso5451qdwrq1.step` / `iso5451qdwrq1.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/iso5451-q1) (38 pp, sha256 `9efccfdedc93903f`, retrieved 2026-10-08, 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/iso5451qdwrq1-datasheet.pdf)