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tps71718dckr

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Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SC-70-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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TPS71718DCKR

Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SC-70-5

TPS71718DCKR from Texas Instruments, in a SC-70-5. 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 IN power_in Regulator input supply, 2.5 V to 6.5 V (absolute max 7 V). A 0.1 µF to 1 µF ceramic bypass capacitor from IN to GND is recommended for best transient and PSRR performance.
2 GND power_in Device ground return. Typical ground pin current is ~45 µA at 0.1 mA load and ~100 µA at 150 mA load. Should be tied to a low-impedance ground plane close to the input and output capacitor grounds.
3 EN input Active-high enable, TTL/CMOS compatible. Drive above V_EN(high) (1.2 V min for V_IN ≤ 5.5 V) to enable regulation; drive below V_EN(low) (0.4 V max) to place the device in shutdown (I_SHDN ≈ 0.2 µA typ). Must not be left floating; tie to IN if shutdown control is not needed. Absolute max V_EN = V_IN + 0.3 V or 7 V, whichever is greater.
4 NR passive Noise reduction pin (fixed-voltage version only). An optional low-leakage ceramic capacitor (typ. 0.01 µF) from NR to GND bypasses band-gap reference noise, lowering output noise to ~12.5 × V_OUT µV_RMS (100 Hz-100 kHz). High-impedance node fed by a quick-start switch at startup; a capacitor >0.01 µF slows startup significantly.
5 OUT power_out Regulated 1.8 V output (TPS71718). Rated up to 150 mA with 170 mV typical dropout at 150 mA and ±3% accuracy over line/load/temperature. Requires a minimum 1 µF ceramic output capacitor (X5R/X7R, ESR < 1 Ω) to GND for stability; placed within 10 mm of the pin.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SC-70-5
Category PMIC
Pins 5

Ordering variants

  • TPS71718DCKR
  • TPS71718DCKRDCKT
  • TPS71718DCKRDRVR
  • TPS71718DCKRDRVT
  • TPS71718DCKRDSER
  • TPS71718DCKRDSET

CAD (KiCad official)

  • Symbol: TPS71718DCKR
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SC-70-5 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Texas Instruments datasheet (None pp, sha256 4d141eb4e3c21188, retrieved 2026-08-17, tier: manufacturer)
  • 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: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

Symbol & Footprint

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Datasheet

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