component
RS3235YEK
Public Unreviewedby Ray
Jiangsu RUNIC Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, ESOP8. Datasheet-verified pinout, 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
markdownRS3235YEK
Jiangsu RUNIC Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · ESOP8
RS3235YEK from Jiangsu RUNIC Tech, in a ESOP8. 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 | POK | output | Power-OK signal output. Open-drain output that indicates the status of the output voltage by sensing FB voltage. Pulled low when output voltage is not within the Power-OK voltage window (rising threshold ~93% of VFB, hysteresis ~8%). Requires external pull-up resistor. |
| 2 | EN | input | Active-high enable control pin. Applying voltage above ~1.2V enables the regulator (new soft-start each time); pulling below ~0.5V shuts down the output. When left open, an internal 800-2000kΩ pull-low resistor pulls EN low and shuts down the regulator. Max 6.0V. |
| 3 | VIN | power_in | Main supply input pin for voltage conversion. Recommended operating range 1.0V to 6.0V. A decoupling capacitor (≥10μF) should be placed near this pin for filtering and transient response. Voltage is monitored for Power-On-Reset (rising POR threshold typ 0.9V). |
| 4 | VCNTL | power_in | Bias voltage input for internal control circuitry. Connect to a voltage source (+5V recommended, operating range 3.0V to 6.0V). A 0.1μF decoupling capacitor is typically placed near this pin. Voltage is monitored for Power-On-Reset (rising POR threshold typ 2.7V). |
| 5 | NC | unconnected | No Connection. Not internally bonded; leave floating or tie to GND per layout preference. |
| 6 | VOUT | power_out | Regulator output pin. Connect a load capacitor (≥10μF, ESR 0-200mΩ) for stability and transient response. Output voltage is programmed by external resistor divider to FB. Provides up to 3A continuous / 4A peak. During shutdown, VOUT is discharged by an internal ~55Ω pull-low MOSFET. |
| 7 | FB | input | Voltage feedback pin. Connect to an external resistor divider from VOUT to set output voltage; internal reference VREF = 0.8V. FB input current is ±100nA max. Also sensed by the POK comparator. |
| 8 | GND | power_in | Ground pin of the circuitry. Connect to system ground plane; provides return path for both bias and power currents. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Jiangsu RUNIC Tech |
| Package | ESOP8 |
| Category | PMIC |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
RS3235YEKRS3235YEKYTDC10
CAD (KiCad official)
- Symbol:
RS3235YEK - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm - 3D model: ESOP8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Jiangsu RUNIC Tech datasheet (21 pp, sha256
9e844e456273e744, retrieved 2026-08-17, tier: lcsc) - 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).