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SY5003CABC

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Silergy Corp AC-DC Controllers And Regulators, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SY5003CABC

Silergy Corp · AC-DC Controllers And Regulators · SOT-23-6

SY5003CABC 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 ISEN input Current sense pin that connects to the source of the primary switch; the absolute maximum rating for ISEN is -0.3V to 3.6V.
2 GND power_in Ground pin for the controller.
3 COMP input Feedback input connected to the optocoupler, where the PWM duty cycle is set by the voltage on this pin; the absolute maximum rating for COMP is -0.3V to 3.6V and the datasheet gives a 10kΩ internal pull-up to an internal 2.5V bias.
4 VSEN input Inductor current zero-crossing detection pin that receives the auxiliary winding voltage through a resistor divider; the absolute maximum rating is -0.3V to VVIN+0.3V.
5 VIN power_in Power supply pin; the absolute maximum rating is -0.3V to 21V with 20mA maximum supply current, and the recommended operating range is 9V to 17.5V.
6 DRV output Gate driver pin that connects to the gate of the primary MOSFET; the absolute maximum rating is -0.3V to 15V, with a maximum source current of 120mA and a maximum sink current of 500mA.

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
VIN supply voltage (absolute max) VIN -0.3 21 V 3
Supply current (absolute max) IVIN 20 mA 3
VSEN pin voltage (absolute max; upper limit printed as VVIN+0.3V) VSEN -0.3 V 3
DRV pin voltage (absolute max) DRV -0.3 15 V 3
ISEN pin voltage (absolute max) ISEN -0.3 3.6 V 3
COMP pin voltage (absolute max) COMP -0.3 3.6 V 3
Power dissipation SOT23-6 1.1 W TA = 25°C 3
Junction temperature range (absolute max) -45 150 °C 3
Lead temperature (soldering) 260 °C Soldering, 10 sec. 3
Storage temperature range -65 150 °C 3
VIN operating voltage (recommended) VIN 9 17.5 V 3
Junction temperature range (recommended) -40 125 °C 3
Ambient temperature range (recommended) -40 105 °C 3
Package thermal resistance junction-to-ambient SOT23-6 θJA 125 °C/W 3
Package thermal resistance junction-to-case SOT23-6 θJC 60 °C/W 3
VCC turn-on threshold VVCC,ON 13.7 14.7 15.7 V 4
VCC turn-off threshold VVCC,OFF 6.3 7 8.3 V 4
VCC OVP voltage VVCC,OVP 17.5 18.5 19.5 V 4
Start up current IST 1.2 4 µA VVCC<VVCC,OFF 4
Internal reference voltage VREFI 0.4137 0.42 0.4263 V 4
Current limit voltage VISEN,LIM 0.6 0.7 0.8 V VFBV<0.4V 4
Current limit voltage VISEN,LIM 0.95 1 1.05 V VFBV>0.4V 4
CC feedforward resistor Rk2 225 300 375 Ω 4
OVP voltage threshold (VSEN pin) VVSEN,OVP 1.3775 1.45 1.5225 V 4
Maximum source current ISOURCE,max 120 mA 4
Maximum sink current ISINK,max 500 mA 4
Max ON time tON,MAX 24 µs Vcomp=2.5V 4
Min ON time tON,MIN 300 ns 4
Max OFF time tOFF,MAX 400 500 700 µs 4
Min OFF time TOFF,MIN 1.2 µs 4
Maximum frequency fMAX 110 125 145 kHz 4
Operating current IVCC 1 mA CL=100pF,f=100kHz 4
Quiescent current IQ 400 µA 4
Shunt current in OVP mode IVCC,OVP 7.5 mA VVCC>VVCC,OVP 4
Latch voltage for ISEN VISEN,EX 2 V 4
Internal voltage bias (COMP) VCVB 2.5 V 4
Sleep mode voltage ON threshold VCOMP-ON 0.4 V 4
Sleep mode voltage OFF threshold VCOMP-OFF 0.45 V 4
Internal pull-up resistor RCOMPV 10 kΩ 4
Gate driver voltage VGate 12 V 4
Thermal shutdown temperature TSD 150 °C 4

CAD (KiCad official)

  • Symbol: SY5003CABC
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: sy5003cabc-etched.step / sy5003cabc-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sy5003cabc.step / sy5003cabc.glb are the bare package body.

Provenance

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

  • Datasheet: Silergy Corp datasheet (19 pp, sha256 d1d6b009214b430f, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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