component
NCS37020DTBR2G
Public Made by Adomby adom
onsemi Power Management - Specialized, TSSOP-14. 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
markdownNCS37020DTBR2G
onsemi · Power Management - Specialized · TSSOP-14
NCS37020DTBR2G from onsemi, in a TSSOP-14. 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 | SCR Test | input | SCR test input for SCR functionality verification, receives pre-bias voltage at 3.3 V during test cycles and monitors anode voltage below 2.1 V for pass/fail detection. |
| 2 | CTB | input | Differential current transformer bias voltage input biased at 1.65 V providing reference for CT sense amplifier with internal 3.3 V regulator. |
| 3 | CTS | input | Differential current signal input from current transformer secondary with CTS-CTB absolute offset voltage range of ±300 μV. |
| 4 | CTO | output | Differential current to voltage output from CT sense amplifier with dynamic VOS cancellation, output range −0.25 V to +0.25 V serving as input to analog filter and ADC. |
| 5 | IDF | input | Differential low pass filter and ADC input accepting CTO amplifier output for ground fault detection with adjustable sensitivity via external RC filter. |
| 6 | REF | output | 3.3 V internal reference voltage output for external component biasing and filtering, requires 1 μF capacitor per recommended external components. |
| 7 | GND | power_in | Electronics ground reference for all analog and digital circuitry and external components. |
| 8 | Phase | input | Zero cross input for VAC frequency detection from mains AC line at 50 or 60 Hz with 1 μA internal pull-down current and maximum 400 μA sink current capability. |
| 9 | SUP | power_in | Power supply input to 12 V shunt regulator clamped at 12−13 V, supplies bias for internal 3.3 V digital and analog regulators, requires 2.2 μF ceramic holding capacitor. |
| 10 | AUX | power_in | Auxiliary power supply input for secondary bias supply option when half-wave bias configuration is not available. |
| 11 | LED | output | End of life LED drive output at 3.0−3.6 V driving LED indicators during normal operation or end-of-life fault conditions with blink frequency 3.6−4.4 Hz during faults. |
| 12 | TE | input | Test enable input for internal production testing only, must be connected to GND pin for normal circuit operation. |
| 13 | Fault Test | output | Differential self-test output signal enabled during positive half-cycle of self-test cycle when verifying CT and bias circuitry functionality. |
| 14 | SCR | output | SCR gate drive signal output at 3.0−3.6 V enabling SCR triode devices during fault conditions or self-test cycles, disabled during negative half-cycle in half-wave bias operation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | TSSOP-14 |
| Category | Power Management (PMIC) |
| Pins | 14 |
CAD (KiCad official)
- Symbol:
NCS37020DTBR2G - Footprint:
Package_SO:TSSOP-14_4.4x5mm_P0.65mm - 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files:
ncs37020dtbr2g-etched.step/ncs37020dtbr2g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ncs37020dtbr2g.step/ncs37020dtbr2g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (13 pp, sha256
d51431a35b66123f, retrieved 2026-09-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).