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TPS2301IPWR

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Texas Instruments Surge Protection Devices (SPDs), TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TPS2301IPWR

Texas Instruments · Surge Protection Devices (SPDs) · TSSOP-20

TPS2301IPWR from Texas Instruments, in a TSSOP-20. 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 GATE1 output Connects to the gate of the channel 1 high-side external N-channel MOSFET; the internal charge pump sources approximately 15 µA to pull it up and generates 9 V-12 V gate-to-source.
2 GATE2 output Connects to the gate of the channel 2 high-side external N-channel MOSFET; the internal charge pump sources approximately 15 µA to pull it up and generates 9 V-12 V gate-to-source.
3 DGND power_in Digital ground; all device voltages are referenced to DGND.
4 TIMER output Sets the circuit-breaker deglitch time through a capacitor to ground (minimum 50 pF recommended); the circuit-breaker latches off when TIMER reaches approximately 0.5 V.
5 VREG output Output of the internal low-dropout regulator (input IN1), less than 5.5 V, that requires a 0.1-µF ceramic capacitor to ground for noise rejection.
6 VSENSE2 input Power-good sense input for channel 2; a voltage below approximately 1.23 V pulls PWRGD2 low.
7 VSENSE1 input Power-good sense input for channel 1; a voltage below approximately 1.23 V pulls PWRGD1 low.
8 AGND power_in Analog ground, connected to DGND as close as possible.
9 ISENSE2 input Channel 2 current-sense input; an overcurrent is assumed if ISENSE2 is pulled below ISET2, and it should never exceed VI(IN2).
10 ISENSE1 input Channel 1 current-sense input; an overcurrent is assumed if ISENSE1 is pulled below ISET1, and it should never exceed VI(IN1).
11 IN1 input Input voltage for channel 1 that also supplies the device operating current; channel 1 supports 3-V, 5-V, or 12-V operation.
12 IN2 input Input voltage for channel 2, which supports 3-V or 5-V operation.
13 PWRGD2 output Open-drain output asserted low when VSENSE2 is below the reference (about 1.23 V); it is pulled up to its pullup rail in disable mode.
14 ISET2 input Sets the channel 2 circuit-breaker threshold through an external resistor to IN2; an internal 50-µA current source draws from this pin.
15 ISET1 input Sets the channel 1 circuit-breaker threshold through an external resistor to IN1; an internal 50-µA current source draws from this pin.
16 FAULT output Open-drain overcurrent fault output that is pulled low when a sustained overcurrent latches off a channel.
17 PWRGD1 output Open-drain output asserted low when VSENSE1 is below the reference (about 1.23 V); it is pulled up to its pullup rail in disable mode.
18 ENABLE input Active-high enable input on the TPS2301 (CMOS- and TTL-compatible); pulling it low for more than 50 µs discharges the MOSFET gates and output bulk capacitance.
19 DISCH2 output Discharge transistor for channel 2; connects to the source of the channel 2 external MOSFET and serves as the gate-clamp reference.
20 DISCH1 output Discharge transistor for channel 1; connects to the source of the channel 1 external MOSFET and serves as the gate-clamp reference.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-20
Category Circuit Protection
Pins 20

CAD (KiCad official)

  • Symbol: TPS2301IPWR
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: tps2301ipwr-etched.step / tps2301ipwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tps2301ipwr.step / tps2301ipwr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (29 pp, sha256 8360d0297aba9fa0, retrieved 2026-10-11, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (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