component
SY5983FAC
Public Made by Adomby adom
Silergy Corp AC-DC Controllers And Regulators, SOP-8. 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
markdownSY5983FAC
Silergy Corp · AC-DC Controllers And Regulators · SOP-8
SY5983FAC from Silergy Corp, in a SOP-8. 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 | COMP | passive | Loop compensation pin; connect an RC network across this pin and GND to stabilize the control loop, with absolute maximum rating of -0.3V to 3.6V. |
| 2 | ZCS | input | Inductor current zero-crossing detection input that receives the auxiliary winding voltage through a resistor divider, also providing OVP (threshold VZCS_OVP 1.5V typ.), line regulation and CV detection, with absolute maximum rating of -0.3V to 1.8V. |
| 3 | ISEN | input | Current sense input connected to the primary switch source and the sense resistor RS to GND, with absolute maximum rating of -0.3V to 3.6V and current limit reference VISEN_MAX of 0.45V. |
| 4 | DRV | output | Gate driver output connected to the gate of the primary MOSFET, with maximum source current 0.19A, minimum sink current 0.6A and absolute maximum rating of -0.3V to 18V. |
| 5 | VIN | power_in | Power supply pin with input voltage range 7.5V to 17.4V (VIN OVP 17.4V) and absolute maximum rating of -0.3V to 18V; a 330nF ceramic capacitor to GND is recommended. |
| 6 | DIM | bidirectional | Connects to the primary side of the dimming transformer to sense the 0~10V dimming signal, with absolute maximum rating of -0.3V to 40V and constant peak current of 23mA in dimming mode. |
| 7 | GND | power_in | Ground pin; the current sense resistor is connected between the primary switch source (ISEN) and this pin. |
| 8 | HV | input | High voltage start-up pin that charges VIN through the internal HV MOS from the bus, with breakdown voltage VBV of 700V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Silergy Corp |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VIN, DRV voltage (absolute maximum) | VIN, DRV | -0.3 | 18 | V | 3 | ||
| Supply current IVIN (absolute maximum) | IVIN | 7 | mA | 3 | |||
| ZCS pin voltage (absolute maximum) | ZCS | -0.3 | 1.8 | V | 3 | ||
| DIM pin voltage (absolute maximum) | DIM | -0.3 | 40 | V | 3 | ||
| ISEN, COMP pin voltage (absolute maximum) | ISEN, COMP | -0.3 | 3.6 | V | 3 | ||
| HV pin voltage (absolute maximum) | HV | 700 | V | 3 | |||
| Power dissipation, SO8 (absolute maximum) | PD | 1.1 | W | TA = 25°C | 3 | ||
| Package thermal resistance SO8 junction-to-ambient | θJA | 88 | °C/W | 3 | |||
| Package thermal resistance SO8 junction-to-case | θJC | 45 | °C/W | 3 | |||
| Junction temperature range (absolute maximum) | TJ | -40 | 150 | °C | 3 | ||
| Lead temperature (soldering, 10 sec) | 260 | °C | Soldering, 10 sec | 3 | |||
| Storage temperature range (absolute maximum) | TSTG | -65 | 150 | °C | 3 | ||
| Junction temperature range (recommended operating) | TJ | -40 | 125 | °C | 3 | ||
| Input voltage range | VVIN | 7.5 | 17.4 | V | 4 | ||
| VIN turn-on threshold | VVIN_ON | 11.8 | V | 4 | |||
| VIN turn-off threshold | VVIN_OFF | 7.5 | V | 4 | |||
| VIN OVP voltage | VVIN_OVP | 17.4 | V | 4 | |||
| Start-up current | IST | 170 | µA | VVIN<VVIN_OFF | 4 | ||
| Discharge current in OVP mode | IVIN_OVP | 7 | mA | VVIN=12V (Note 4) | 4 | ||
| Internal reference voltage | VREF | 280 | mV | 4 | |||
| Current limit reference voltage | VISEN_MAX | 0.45 | V | 4 | |||
| ZCS pin OVP voltage threshold | VZCS_OVP | 1.5 | V | 4 | |||
| Gate driver voltage | VGate | 11 | V | 4 | |||
| Maximum source current | ISOURCE | 0.19 | A | 4 | |||
| Minimum sink current | ISINK | 0.6 | A | 4 | |||
| Max ON time | TON_MAX | 22 | µs | VCOMP=2.7V | 4 | ||
| Min ON time | TON_MIN | 450 | ns | 4 | |||
| Max OFF time | TOFF_MAX | 50 | µs | 4 | |||
| Min OFF time | TOFF_MIN | 1.5 | µs | 4 | |||
| Maximum switching frequency | FMAX | 120 | kHz | 4 | |||
| DIM peak current | I_pk | 23 | mA | 4 | |||
| HV breakdown voltage | V_BV | 700 | V | 4 | |||
| Thermal shutdown temperature | TSD | 150 | °C | 4 |
CAD (KiCad official)
- Symbol:
SY5983FAC - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
sy5983fac-etched.step/sy5983fac-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sy5983fac.step/sy5983fac.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Silergy Corp datasheet (20 pp, sha256
1e5a961fcc2e9797, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).