component
TPS22918
Public Unreviewedby Ray
TI single-channel load switch, SOT-23-6. Integrated N-FET, 1-5.5 V, slew-rate + quick-discharge control. Datasheet-verified.
3D Model
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Symbol & Footprint
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PCB Footprint
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Datasheet
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README
markdownTPS22918
Texas Instruments · Load switch · SOT-23-6
Single-channel load switch with an integrated N-channel MOSFET, in a SOT-23-6 package. It connects VIN to VOUT under an active-high ON control, from a 1 to 5.5 V rail at up to 2 A, with a low on-resistance. An external capacitor on CT sets the output slew rate to tame inrush, and QOD gives a controlled quick output discharge when the switch turns off. The clean way to sequence and hot-swap power rails to sub-circuits.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | power_in | Switch input, 1 V to 5.5 V. Place ceramic bypass capacitor(s) (>=1 uF recommended) between this pin and GND. Absolute max 6 V. |
| 2 | GND | power_in | Device ground reference. |
| 3 | ON | input | Active-high switch control input. VIH >= 1 V, VIL <= 0.5 V (VIN = 1 to 5.5 V). Low-voltage compatible (1 V or higher GPIO). Do not leave floating. |
| 4 | CT | passive | Switch slew-rate (rise-time) control. Connect an external capacitor to GND to program the rise time; may be left floating for the default rise time. |
| 5 | QOD | passive | Quick Output Discharge pin. Configure by placing an external resistor between VOUT and QOD, tying QOD directly to VOUT to use the internal pull-down (RPD ~24-45 Ohm depending on VIN), or leaving floating to disable QOD. |
| 6 | VOUT | power_out | Switch output. Connected to VIN through the internal N-channel MOSFET (RON ~52 mOhm typ at VIN = 5 V; 53 mOhm typ at VIN = 3.3 V). Supports up to 2 A continuous. |
Key specifications
| Parameter | Value |
|---|---|
| Type | Single-channel load switch (integrated N-FET) |
| Input voltage | 1-5.5 V |
| Output current | up to 2 A |
| Control | ON (active-high) |
| Slew-rate control | CT pin (external cap sets rise time) |
| Output discharge | QOD (quick output discharge) |
| Package | SOT-23-6 |
| Body (L×W×H) | 2.9 × 1.6 × 1.1 mm |
Ordering variants
Same part, different packaging or reel option.
TPS22918DBVR (SOT-23-6, tape & reel)
CAD (KiCad official)
- Symbol:
TPS22918 (Adom-authored grouped symbol via adom-symbol; not in KiCad libs) - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (30 pp, sha256
1b28eb58003d28b1, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude) — every pin and dimension is cited to a datasheet page; refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).