component
SY8303AIC
Public Made by Adomby adom
Silergy Corp DC-DC Converters, TSOT-23-8. Pinout extracted from 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
markdownSY8303AIC
Silergy Corp · DC-DC Converters · TSOT-23-8
SY8303AIC from Silergy Corp, in a TSOT-23-8. 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 | FB | input | Output feedback pin. Connect to the center point of the external output resistor divider (R1/R2) to program the output voltage per VOUT = 0.6 * (1 + R1/R2). Internal 0.6V (±1.5%) reference; FB input current ±50nA max. |
| 2 | FS | input | Switching frequency programming pin. Connect a resistor RFS to GND to set the switching frequency between 500kHz and 2.5MHz per Fsw = 10^5 / RFS [kHz], with RFS in kΩ. |
| 3 | GND | power_in | Ground pin. Connect to system ground; maximize copper area for thermal and noise performance. |
| 4 | GND | power_in | Ground pin. Connect to system ground; maximize copper area for thermal and noise performance. |
| 5 | IN | power_in | Input supply pin, 4.5V to 40V (absolute max 40V vs GND). Decouple to GND with at least a 4.7µF low-ESR X5R (or better) ceramic capacitor placed close to the IN and GND pins. |
| 6 | LX | power_out | Switching node. Connects the internal high-side and low-side power MOSFETs to the external output inductor. Minimize PCB copper area on this net to reduce radiated noise. |
| 7 | BS | power_in | Bootstrap pin that supplies the high-side gate driver. Decouple to LX with a 10nF low-ESR ceramic capacitor. Absolute max BS-LX = 4V. |
| 8 | EN | input | Enable input. Pull high (VENH ≥ 1.5V) to turn on; drive low (VENL ≤ 0.6V) to shut down. Do not float. If the driving source is high-impedance and IN is tied to a battery, add a 1MΩ pull-down between EN and GND to prevent false turn-on. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Silergy Corp |
| Package | TSOT-23-8 |
| Category | PMIC |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
SY8303AIC
CAD (KiCad official)
- Symbol:
SY8303AIC - Footprint:
Package_TO_SOT_SMD:SOT-23-8 - 3D model: TSOT-23-8 (KiCad packages3D, STEP)
- 3D model files:
sy8303aic-etched.step/sy8303aic-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sy8303aic.step/sy8303aic.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Silergy Corp datasheet (9 pp, sha256
337629d344cdcb83, 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).