component
TPS22981RGPR
Public Made by Adomby adom
Texas Instruments Power Distribution Switches, QFN-20(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTPS22981RGPR
Texas Instruments · Power Distribution Switches · QFN-20(4x4)
TPS22981RGPR from Texas Instruments, in a QFN-20(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 | GND | power_in | Device ground; all GND pins must be connected to board ground. |
| 2 | GND | power_in | Device ground; all GND pins must be connected to board ground. |
| 3 | GND | power_in | Device ground; all GND pins must be connected to board ground. |
| 4 | FAULTZ | output | Open-drain fault output that pulls low during a fault condition; connect a pull-up resistor (RFAULTZ, at least 30 kΩ, 100 kΩ recommended) to V3P3, or float or tie to GND if unused. |
| 5 | EN | input | Device active-high enable; when low, OUT is open. |
| 6 | VHV | power_in | High-voltage power supply input, 4.5 V to 19.8 V; minimize inductance at this pin to avoid inductive voltage bounce at short circuit. |
| 7 | VHV | power_in | High-voltage power supply input, 4.5 V to 19.8 V; minimize inductance at this pin to avoid inductive voltage bounce at short circuit. |
| 8 | ISET_V3P3 | passive | Sets the V3P3 current limit; place a resistor (RSET_V3P3, 26.7 kΩ to 402 kΩ) between this pin and GND. |
| 9 | ISET_S3 | passive | Sets the VHV current limit in S3 mode; place a resistor (RSET_S3, 26.7 kΩ to 402 kΩ) between this pin and GND. |
| 10 | ISET_S0 | passive | Sets the VHV current limit in S0 mode; place a resistor (RSET_S0, 26.7 kΩ to 402 kΩ) between this pin and GND. |
| 11 | HV_EN | input | Active-high VHV output enable, controlling the VHV switch. |
| 12 | OUT | power_out | Power output; place a minimum of 1 µF capacitor as close to this pin as possible. |
| 13 | GND | power_in | Device ground; all GND pins must be connected to board ground. |
| 14 | OUT | power_out | Power output; place a minimum of 1 µF capacitor as close to this pin as possible. |
| 15 | GND | power_in | Device ground; all GND pins must be connected to board ground. |
| 16 | ENHVU | input | When high, device enable also requires VHV UVLO to be cleared (both V3P3 and VHV present); when low, only V3P3 must be present. |
| 17 | S0 | input | When asserted high, the device operates in S0 mode (RSET_S0 sets the VHV limit); otherwise it operates in S3 mode. |
| 18 | V3P3OUT | power_out | 3.3 V bypass output; place a minimum of 0.1 µF capacitor as close to this pin as possible. |
| 19 | V3P3 | power_in | 3.3 V power supply input (3 V to 3.6 V); place a minimum of 0.1 µF capacitor as close to this pin as possible. |
| 20 | V3P3 | power_in | 3.3 V power supply input (3 V to 3.6 V); place a minimum of 0.1 µF capacitor as close to this pin as possible. |
| 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(4x4) |
| Category | Power Management (PMIC) |
| Pins | 21 |
CAD (KiCad official)
- Symbol:
TPS22981RGPR - Footprint:
Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm - 3D model: QFN-20(4x4) (KiCad packages3D, STEP)
- 3D model files:
tps22981rgpr-etched.step/tps22981rgpr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps22981rgpr.step/tps22981rgpr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (21 pp, sha256
58c94a210202c417, 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).