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M54133AG-S16-R

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by Ray

UTC Unisonic Tech Supervisor and Reset ICs, SOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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M54133AG-S16-R

UTC Unisonic Tech · Supervisor and Reset ICs · SOP-16

M54133AG-S16-R from UTC Unisonic Tech, in a SOP-16. 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 GND power_in Ground reference for the device.
2 IREF passive Pin for connecting an external resistor (approx. 180 kΩ typical) that sets the constant current for internal circuits. Voltage at this pin is approximately 1.3 V.
3 VCC power_out Output of the internal constant-voltage regulator (~5.2 V at IOH=-1 mA). Requires an external decoupling capacitor to GND.
4 OFFC passive Reset-time capacitor pin. Connect a capacitor (e.g. 0.33 μF for TW3≈75 ms) that determines the restore time after a leakage event ends or after the SCR is triggered. Threshold ~2.4 V.
5 TRC1 passive Capacitor pin for the 3-ms integrator that integrates the signal output from the leak-signal input-level discriminator. Threshold ~2.4 V; typical C=0.01 μF for TW1≈3 ms.
6 TRC2 passive Capacitor pin for the 1-ms noise-elimination integrator. Threshold ~2.4 V; typical C=0.0047 μF for TW2≈1.5 ms.
7 DLYC passive Delay-timer capacitor pin. Connect a capacitor (e.g. 1.0 μF for TW4≈300 ms) to set the delay time when using the delay function. Threshold ~2.4 V.
8 SCRT output SCR gate driver output. Sources high output current (IOH ~-50 μA typ. at TA=+20 °C, VO=8 V) to trigger the external SCR that fires the trip coil; low output voltage VOL≈0.1 V at IOL=200 μA.
9 VREF output Reference-voltage output providing the input reference level for leakage detection. Nominal 2.4 V at IOH=-200 μA; VREF-to-GND clamp voltage 4.7 V at 5 mA.
10 ILKI input Leakage-detection signal input (the other side of the differential leakage detector, referenced to VREF). DC input voltage of leakage detection ±14.0 mVdc w.r.t. VREF; total AC input VT=11.5 mVrms typ. at 60 Hz; input bias current ~220 nA.
11 OPAO output Output of the internal operational amplifier used as an active low-pass filter. IOH=2.8 mA, IOL=0.8 mA; max output swing 3.5 Vpp; voltage gain 40 dB at 1 kHz; -3 dB BW=6 kHz.
12 C2 passive Compensation capacitor pin for the op-amp; connect a capacitor between pins 11 (OPAO) and 12 to prevent abnormal oscillations.
13 OPI- input Inverting (negative) input of the internal operational amplifier. Differential input clamp ±0.8 V; differential input current limit ±5 mA; input bias current ~125 nA.
14 C1 passive Noise-filter capacitor pin for the op-amp inputs; connect capacitors between pin 14 and pin 13 (OPI-) and between pin 14 and pin 15 (OPI+) to prevent noise-induced malfunction.
15 OPI+ input Non-inverting (positive) input of the internal operational amplifier. Differential input clamp ±0.8 V vs. OPI-; input bias current ~125 nA.
16 VS power_in Main power supply input. Recommended operating range 7-12 V; absolute maximum 15 V. Standby supply current IS0=610 μA typ. at RIREF=180 kΩ.

Key specifications

Parameter Value
Manufacturer UTC Unisonic Tech
Package SOP-16
Category PMIC
Pins 16

Ordering variants

Same part, different packaging or reel option.

  • M54133AG-S16-R
  • M54133AL-S16N-R
  • M54133AG-S16N-R

CAD (KiCad official)

  • Symbol: M54133AG-S16-R
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOP-16 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: UTC Unisonic Tech datasheet (7 pp, sha256 3837fabbf92a63da, retrieved 2026-08-17, tier: manufacturer)
  • 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