component
TPS61187RTJR
Public Made by Adomby adom
Texas Instruments LED Drivers, QFN-20-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownTPS61187RTJR
Texas Instruments · LED Drivers · QFN-20-EP(4x4)
TPS61187RTJR from Texas Instruments, in a QFN-20-EP(4x4). 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 | VDDIO | power_out | Internal pre-regulator output; connect a 1.0 µF ceramic capacitor to VDDIO, which is specified at 3.0 V to 3.6 V (3.3 V typical) at 5 mA load. |
| 2 | EN | input | Enable input with logic-high threshold of 2.1 V minimum and logic-low threshold of 0.8 V maximum, with an internal pull-down of 400 kΩ to 1600 kΩ. |
| 3 | FSLCT | input | Switching frequency selection pin; a resistor on this pin sets the switching frequency between 300 kHz and 1.0 MHz. |
| 4 | ISET | input | Full-scale LED current set pin; a resistor connected to this pin programs the LED current level (ISET voltage 1.229 V typical). |
| 5 | FPO | output | Fault protection output that indicates fault conditions including OVP, OC, and OT; logic-low voltage is 0.4 V maximum at 0.5 mA source current. |
| 6 | IFB1 | input | Regulated LED current sink input; each of the six current sinks is rated 30 mA maximum. |
| 7 | IFB2 | input | Regulated LED current sink input; each of the six current sinks is rated 30 mA maximum. |
| 8 | IFB3 | input | Regulated LED current sink input; each of the six current sinks is rated 30 mA maximum. |
| 9 | GND | power_in | Analog ground of the device. |
| 10 | IFB4 | input | Regulated LED current sink input; each of the six current sinks is rated 30 mA maximum. |
| 11 | IFB5 | input | Regulated LED current sink input; each of the six current sinks is rated 30 mA maximum. |
| 12 | IFB6 | input | Regulated LED current sink input; each of the six current sinks is rated 30 mA maximum. |
| 13 | RFPWM/MODE | input | Dimming frequency program pin set by an external resistor, and mode selection pin; see the Application Information section for details. |
| 14 | OVC | input | Over-voltage clamp pin and voltage feedback pin; see the Application Information section for details. |
| 15 | PGND | power_in | Power ground of the device. |
| 16 | SW | output | Drain connection of the internal power FET; absolute maximum rating is -0.3 V to 40 V. |
| 17 | NC | unconnected | No connection. |
| 18 | FAULT | output | Fault pin used to drive an external isolation FET; voltage range is -0.3 V to 24 V absolute maximum. |
| 19 | VIN | power_in | Supply input pin; operating input voltage range is 4.5 V to 24 V. |
| 20 | PWM | input | PWM signal input for dimming, with logic-high threshold of 2.1 V minimum and logic-low threshold of 0.8 V maximum. |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | QFN-20-EP(4x4) |
| Category | LED Drivers |
| Pins | 21 |
CAD (KiCad official)
- Symbol:
TPS61187RTJR - Footprint:
Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm - 3D model: QFN-20-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
tps61187rtjr-etched.step/tps61187rtjr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps61187rtjr.step/tps61187rtjr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (29 pp, sha256
66cb4f8defa22d56, 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, primaryclaude-haiku-5-5(text), consensusclaude-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).