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sy7301aadc
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Silergy Corp LED Drivers, TSOT-23-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.
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Silergy Corp · LED Drivers · TSOT-23-6
SY7301AADC from Silergy Corp, in a TSOT-23-6. 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 | LX | power_out | Inductor switching node. Drain of the internal 200mΩ low-side NMOS power switch (2A current limit). Connect the boost inductor between the input supply and this pin, and the Schottky diode from LX to the output. Absolute max 42V. |
| 2 | GND | power_in | Device ground return. All internal reference and control circuitry is referenced to this pin. Provide a low-inductance path back to the input and output capacitor grounds. |
| 3 | FB | input | LED current feedback pin. Regulated to VREF = 300mV (294-306mV). Connect a sense resistor R_FB from FB to GND in series with the LED string to program the LED current: I_LED = 0.3V / R_FB. Typical FB input current 1µA. Absolute max 4V. |
| 4 | EN/PWM | input | Enable and PWM dimming input. Pull high (V_ENH ≥ 1.5V) to enable the IC; pull low (V_ENL ≤ 0.4V) to shut down (I_SHDN ~10µA). Also accepts a PWM dimming signal in the range 200Hz-1MHz; the first pulse must be >200ns to start the IC and subsequent low pulses <100ns turn it off. Absolute max 42V. |
| 5 | OVP | input | Open-LED over-voltage protection sense input. Connect to the boost output node. When V_OVP exceeds the OVP threshold (typ 37V, range 35-39V) the switching is disabled to protect the circuit from open-LED runaway. Absolute max 42V. |
| 6 | IN | power_in | Main input supply pin, 2.8V to 40V operating range (UVLO rising ~2.7V, 0.1V hysteresis). Provides bias for the internal circuitry. Decouple to GND with a ≥1µF (X5R or better) ceramic capacitor placed close to the pin. Absolute max 42V; quiescent current ~100µA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Silergy Corp |
| Package | TSOT-23-6 |
| Category | LED-drv |
| Pins | 6 |
Ordering variants
SY7301AADCSY7301AADCADBC
CAD (KiCad official)
- Symbol:
SY7301AADC - Footprint:
Package_TO_SOT_SMD:TSOT-23-6 - 3D model: TSOT-23-6 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Silergy Corp datasheet (None pp, sha256
df4de34342f8b930, 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).