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STWD100PYW83F

Public Made by Adom

by adom

STMicroelectronics Monitors & Reset Circuits, SC-70-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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STWD100PYW83F

STMicroelectronics · Monitors & Reset Circuits · SC-70-5

STWD100PYW83F from STMicroelectronics, in a SC-70-5. 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 WDO output Active-low watchdog output, asserted when WDI is not toggled within the timeout period tWD; open drain (external pull-up to a supply up to 6 V required) or push-pull depending on version.
2 GND power_in Ground.
3 EN input Enable input with internal 63 kΩ typ. (32 to 100 kΩ) pull-down, so the device is enabled if left floating; a pulse of at least 1 µs on EN clears the watchdog timer and glitches under 100 ns are ignored.
4 WDI input Watchdog input that must be toggled within tWD to clear the internal timer; pulses of at least 1 µs are detected and glitches under 100 ns are ignored.
5 VCC power_in Supply voltage, 2.7 to 5.5 V operating (absolute maximum 7.0 V).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SC-70-5
Category Power Management ICs
Pins 5

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Operating voltage VCC 2.7 5 5.5 V 12
VCC supply current ICC 13 26 µA 12
Open drain output leakage current ILO -1 1 µA From output to the GND or VCC 12
Input leakage current (WDI) -1 1 µA 12
Input high voltage (WDI, EN) (x VCC) VIH 0.7 V 0.7 VCC 12
Input low voltage (WDI, EN) (x VCC) VIL 0.3 V 0.3 VCC 12
Output low voltage (WDO) VOL 0.3 V VCC ≥ 2.7 V, ISINK = 1.2 mA 12
Output low voltage (WDO) VOL 0.4 V VCC ≥ 4.5 V, ISINK = 3.2 mA 12
Output high voltage (WDO), push-pull (x VCC) VOH 0.8 V VCC ≥ 2.7 V, ISOURCE = 500 µA; 0.8 VCC 12
EN input pulse width 1 µs 12
EN glitch rejection 100 ns 12
EN-to-WDO delay 200 ns WDO asserts for minimum of 10 µs even if EN transitions high 12
EN pull-down resistance 32 63 100 kΩ 12
Timer startup voltage VSTART 1.9 2.2 2.7 V 13
Watchdog timeout period STWD100xY tWD 1.12 1.6 2.24 s STWD100xY 13
Watchdog active time tPW 140 210 280 ms 13
WDI-to-WDO delay 150 ns 13
WDI pulse width 1 µs 13
WDI glitch rejection 100 ns 13
VCC supply voltage VCC 2.7 5.5 V Operating and AC measurement conditions 12
Ambient operating temperature TA -40 125 °C 12
Storage temperature TSTG -55 150 °C VCC off 11
Lead solder temperature TSLD 260 °C 10 seconds 11
Input or output voltage VIO -0.3 V -0.3 to VCC + 0.3 11
Supply voltage VCC -0.3 7 V 11
Output current IO 20 mA 11
Power dissipation PD 320 mW 11

CAD (KiCad official)

  • Symbol: STWD100PYW83F
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SC-70-5 (KiCad packages3D, STEP)
  • 3D model files: stwd100pyw83f-etched.step / stwd100pyw83f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stwd100pyw83f.step / stwd100pyw83f.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (20 pp, sha256 2ec54876f17739de, retrieved 2026-10-23, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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