component

RY3831

Public Unreviewed

by Ray

RYCHIP DC-DC Converters, ESOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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README

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RY3831

RYCHIP · DC-DC Converters · ESOP-8

RY3831 from RYCHIP, in a ESOP-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 BST passive Bootstrap pin. A capacitor connected between SW and BST forms a floating supply that powers the high-side MOSFET gate driver.
2 VIN power_in Power supply input pin. Accepts 4V to 18V (absolute max 21V). Bypass close to the pin with a ceramic input capacitor.
3 SW power_out Switching node. Connects the internal high-side and low-side MOSFETs to the external inductor. Voltage swings between GND and VIN at 500kHz.
4 GND power_in Ground pin. Tie to the exposed pad and to a large copper area for thermal dissipation.
5 FB input Feedback input for the adjustable output. Connect to the center tap of an external resistor divider from VOUT to GND. Regulated to VFB = 0.923V typical (0.905V - 0.940V).
6 NC unconnected No internal connection. Leave floating or tie to GND per PCB layout convenience.
7 EN input Enable input. Drive logic-high to enable the regulator; drive logic-low to disable and enter micro-power shutdown. Absolute max 21V.
8 NC unconnected No internal connection. Leave floating or tie to GND per PCB layout convenience.
9 EPAD power_in Exposed thermal pad on the package bottom. Electrically GND. Must be soldered to a large ground copper pour for heat dissipation and to meet the 50°C/W θJA rating.

Key specifications

Parameter Value
Manufacturer RYCHIP
Package ESOP-8
Category PMIC
Pins 9

CAD (KiCad official)

  • Symbol: RY3831
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm
  • 3D model: ESOP-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: RYCHIP datasheet (7 pp, sha256 1febf33afacecd6b, 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).

Datasheet PDF