# TPS77433DGKR

**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · VSSOP-8

TPS77433DGKR from Texas Instruments, in a VSSOP-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 | FB/SENSE | input | Feedback input for the adjustable device and sense input for the fixed-output options; on fixed options it must be connected to the regulator output as short as possible and kept away from noise pickup. |
| 2 | PG | output | Open-drain, active-high power-good output that goes high-impedance when Vout reaches 82% of the regulated voltage and low-impedance when Vout falls below 82%, and requires a pullup resistor. |
| 3 | EN | input | Enable input: a logic low enables the regulator and a logic high puts the device into shutdown. |
| 4 | GND | power_in | Regulator ground (signal ground, also the return for the output capacitor). |
| 5 | IN | power_in | Regulator input voltage pin; the datasheet pages provided do not state the input voltage limits for this pin. |
| 6 | IN | power_in | Regulator input voltage pin (second input pin, internally tied to pin 5); the datasheet pages provided do not state the input voltage limits for this pin. |
| 7 | OUT | power_out | Regulated output voltage; requires an output capacitor to GND of at least 1 µF with ESR within the stability region of Figures 19 and 21, or at least 10 µF with ESR within Figures 18 and 20. |
| 8 | OUT | power_out | Regulated output voltage (second output pin, internally tied to pin 7); requires the same output capacitor as pin 7 for stability. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `TPS77433DGKR`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `tps77433dgkr-etched.step` / `tps77433dgkr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps77433dgkr.step` / `tps77433dgkr.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/tps774) (25 pp, sha256 `ea56bf7919f0accf`, retrieved 2026-10-08, 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/tps77433dgkr-datasheet.pdf)