component
TPS25921LDR
Public Made by Adomby adom
Texas Instruments Surge Protection Devices (SPDs), SOIC-8. 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
markdownTPS25921LDR
Texas Instruments · Surge Protection Devices (SPDs) · SOIC-8
TPS25921LDR from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground reference terminal. |
| 2 | SS | input | Soft-start pin; external capacitor to GND sets output voltage ramp rate during device turn-on. |
| 3 | ENUV | input | Enable/undervoltage lockout input; threshold V(ENR)=1.39V rising, V(ENF)=1.34V falling; when pulled below 0.61V resets thermal fault latch in TPS25921L. |
| 4 | IN | power_in | Power supply input and device supply voltage, 4.5V to 18V operating range, 20V absolute maximum. |
| 5 | OUT | power_out | Power output to load; voltage equals V(IN) minus voltage drop across internal FET resistance RDS(ON). |
| 6 | FLT | output | Fault event indicator open-drain output, active low for undervoltage, overvoltage, and thermal shutdown events; maximum sink current 100mA. |
| 7 | ILIM | input | Current limit programming input; external resistor to GND sets overload and short circuit limit (35.7kΩ to 158kΩ for 0.4A to 1.6A range). |
| 8 | OVP | input | Overvoltage protection input; threshold V(OVPR)=1.39V rising, V(OVPF)=1.34V falling opens internal FET and asserts FLT. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Circuit Protection |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
TPS25921LDR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
tps25921ldr-etched.step/tps25921ldr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps25921ldr.step/tps25921ldr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (40 pp, sha256
c4fc910bc1512651, retrieved 2026-09-21, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).