component
SY5040ABC
Public Made by Adomby adom
Silergy Corp AC-DC Controllers And Regulators, SOT-23-6. 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
markdownSY5040ABC
Silergy Corp · AC-DC Controllers And Regulators · SOT-23-6
SY5040ABC from Silergy Corp, in a SOT-23-6. 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 | GND | power_in | Ground pin; the datasheet's layout guidance requires the bias supply capacitor to connect to this pin after the bias trace (page 11). |
| 2 | COMP | input | Connects to an opto-coupler for output voltage feedback; the internal pull-up is 2.7 V through 20 kΩ, the OLP threshold is 2.0-2.5 V, and the pin is rated -0.3 V to 3.6 V. |
| 3 | ZCS | input | Multi-function pin for valley detection, brownout protection and output OVP; the output OVP threshold is 1.9-2.1 V and the pin is rated -0.3 V to 3.6 V. |
| 4 | CS | input | Primary peak current sense pin, also used for external OTP; the maximum peak sense voltage is 0.92-1.03 V, the OCP threshold is 1.24-1.38 V, and the pin is rated -0.3 V to 3.6 V. |
| 5 | VCC | power_in | Power supply pin; the recommended operating range is 12 V to 27 V, the absolute maximum is -0.3 V to 34 V, and the turn-on threshold is 20-23 V. |
| 6 | GATE | output | Gate drive pin for the primary power MOSFET, with 210 mA source and 420 mA sink capability at CL = 10 nF and a gate clamp of 14 V at VCC = 20 V; absolute maximum is -0.3 V to 15 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Silergy Corp |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VCC Turn-on Threshold | VCC_ON | 20 | 21.5 | 23 | V | 3 | |
| VCC Turn-off Threshold | VCC_OFF | 8 | 9 | 10 | V | 3 | |
| VCC OVP Threshold | VCC_OVP | 27.7 | 29.7 | 31.7 | V | 3 | |
| Start up Current | ICC_ST | 2.6 | 4 | µA | VCC=18V | 3 | |
| Quiescent Current | ICC_Q | 200 | 270 | µA | Under sleep mode | 3 | |
| Current Sink under Fault Condition | ICC_FAULT | 0.8 | 1 | 1.3 | mA | 3 | |
| Maximum Peak Current Sense Voltage | VCS_MAX | 0.92 | 0.97 | 1.03 | V | 3 | |
| Primary OCP Threshold | VCS_OCP | 1.24 | 1.31 | 1.38 | V | 3 | |
| External OTP Threshold | VCS_OTP | 0.94 | 1 | 1.06 | V | 3 | |
| OCP Compensation Current | ICS_OCPC | 85 | 100 | 115 | µA | IZCS=500µA | 3 |
| Output OVP Threshold | VZCS_OVP | 1.9 | 2 | 2.1 | V | 3 | |
| Blanking Time for VOUT Sense after VGATE Jumps from HIGH to LOW | TVOSEN_BLK | 1.6 | 2.6 | 3.6 | µs | 3 | |
| Brown Out Threshold Current | IBO | 90 | 100 | 110 | µA | 3 | |
| Brown out Debounce Time | TBO_DBC | 55 | 90 | 125 | ms | 3 | |
| Rated Switching Frequency | FSW_RATE | 60 | 65 | 70 | kHz | 3 | |
| Minimum Switching Frequency | FSW_MIN | 20 | 25 | 30 | kHz | 3 | |
| Threshold to Enter Sleep Mode | VCOMP_INSLEEP | 0.25 | 0.3 | 0.35 | V | VCOMP falling down | 3 |
| Threshold to Exit Sleep Mode | VCOMP_EXSLEEP | 0.37 | 0.42 | 0.47 | V | VCOMP rising up | 3 |
| OLP Threshold | VCOMP_OLP | 2 | 2.25 | 2.5 | V | 3 | |
| OLP Debounce Time | TOLP_DBC | 55 | 90 | 125 | ms | 3 | |
| VCC | VCC | -0.3 | 34 | V | 2 | ||
| Supply Current | ICC | 20 | mA | 2 | |||
| GATE | -0.3 | 15 | V | 2 | |||
| CS, COMP, ZCS | -0.3 | 3.6 | V | 2 | |||
| Power Dissipation SOT23-6 | 1.1 | W | @ TA = 25°C | 2 | |||
| Junction Temperature Range | -45 | 150 | °C | 2 | |||
| Lead Temperature (Soldering) | 260 | °C | 10 sec. | 2 | |||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Package Thermal Resistance SOT23-6 junction-to-ambient | θJA | 125 | °C/W | Note 2: natural convection, TA = 25°C, JEDEC 51-3 low-conductivity board | 2 | ||
| Package Thermal Resistance SOT23-6 junction-to-case | θJC | 60 | °C/W | 2 | |||
| VCC Supply Voltage | VCC | 12 | 27 | V | 2 | ||
| Junction Temperature Range | -40 | 125 | °C | 2 | |||
| Ambient Temperature Range | -40 | 105 | °C | 2 |
CAD (KiCad official)
- Symbol:
SY5040ABC - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
sy5040abc-etched.step/sy5040abc-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sy5040abc.step/sy5040abc.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Silergy Corp datasheet (16 pp, sha256
d7d8d68548a2a5a0, retrieved 2026-10-17, 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).