# TPS61193PWPR

**Texas Instruments** · LED Drivers · HTSSOP-20-EP

TPS61193PWPR from Texas Instruments, in a HTSSOP-20-EP. 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 | VIN | power_in | Input power supply pin (4.5 to 40 V). |
| 2 | LDO | power_out | Output of internal low-dropout regulator; connect 1-μF decoupling capacitor to noise-free ground. |
| 3 | FSET | input | DC-DC switching frequency setting; connect external resistor from 24 kΩ to 219 kΩ between this pin and ground. |
| 4 | VDDIO/EN | power_in | Enable input and supply voltage (VDDIO) for digital logic circuits. |
| 5 | FAULT | tri_state | Open-drain fault signal output; leave floating if unused. |
| 6 | SYNC | input | Boost synchronization input; connect to GND to disable or VDDIO/EN to enable spread spectrum. |
| 7 | PWM | input | PWM brightness control input signal. |
| 8 | NC | unconnected | No-connect pin. |
| 9 | GND | power_in | Ground connection. |
| 10 | ISET | input | LED current setting; connect external resistor from 24 kΩ to 129 kΩ between this pin and ground. |
| 11 | GND | power_in | Ground connection. |
| 12 | GND | power_in | Ground connection. |
| 13 | OUT3 | output | Current sink output for LED string 3; connect to GND if unused. |
| 14 | OUT2 | output | Current sink output for LED string 2; connect to GND if unused. |
| 15 | OUT1 | output | Current sink output for LED string 1; connect to GND if unused. |
| 16 | FB | input | Boost/SEPIC feedback input; connect to resistor divider midpoint between output and ground (5 to 150 kΩ resistors). |
| 17 | PGND | power_in | DC-DC power ground connection. |
| 18 | SW | output | DC-DC converter switching output for boost or SEPIC topology. |
| 19 | NC | unconnected | No-connect pin. |
| 20 | VIN | power_in | Input power supply pin (4.5 to 40 V). |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HTSSOP-20-EP |
| Category | LED Drivers |
| Pins | 21 |

## CAD (KiCad official)

- Symbol: `TPS61193PWPR`
- Footprint: `Package_SO:TSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP2.15x3.35mm`
- 3D model: HTSSOP-20-EP, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.2 mm nominal TSSOP height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `tps61193pwpr-etched.step` / `tps61193pwpr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps61193pwpr.step` / `tps61193pwpr.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/tps61193) (36 pp, sha256 `96a3e0fae8709686`, retrieved 2026-10-07, 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-4-5-20251001` (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/tps61193pwpr-datasheet.pdf)