component
RY3825
Public Made by Adomby adom
RYCHIP DC-DC Converters, SOT-23-6. 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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Contents
README
markdownRY3825
RYCHIP · DC-DC Converters · SOT-23-6
RY3825 from RYCHIP, in a SOT-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 | GND | power_in | Ground return for the device. Connect to a large copper area for thermal dissipation and to minimize the power loop with the input capacitor and internal MOSFETs. |
| 2 | SW | output | Switching node output; the common drain of the internal high-side and low-side power MOSFETs. Connect to the external inductor. Rated -0.3V to (VIN+0.5V). |
| 3 | IN | power_in | Power supply input, 4V to 18V (absolute max 21V). Bypass with a ceramic input capacitor placed close to the pin. |
| 4 | FB | input | Feedback input for the adjustable output. Connect to the center tap of an external resistor divider from VOUT to GND. Regulated to 0.768V typical (0.749V to 0.787V over temperature). Absolute max -0.3V to 6V. |
| 5 | EN | input | Enable input. Drive logic-high (rising threshold typ 1.15V) to enable the IC; drive logic-low to enter micro-power shutdown (typ 10µA). Absolute max -0.3V to 21V. |
| 6 | BS | passive | Bootstrap pin for the high-side gate driver. Connect a bootstrap capacitor between SW and BS to form the floating supply that drives the high-side MOSFET. Rated (VSW-0.3V) to (VSW+5V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | RYCHIP |
| Package | SOT-23-6 |
| Category | PMIC |
| Pins | 6 |
Ordering variants
Same part, different packaging or reel option.
RY3825
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Voltage Range | 4 | 18 | V | 3 | |||
| Operating Temperature Range | -40 | 85 | °C | 3 | |||
| VIN, EN Voltage | -0.3 | 21 | V | 3 | |||
| VFB Voltages | VFB | -0.3 | 6 | V | 3 | ||
| VSW Voltage | VSW | -0.3 | V | upper limit printed as (VIN+0.5V) | 3 | ||
| VBS Voltage | VBS | -0.3 | 5 | V | referenced to VSW: (Vsw-0.3) to (Vsw+5V) | 3 | |
| Lead Temperature (Soldering, 10s) | 300 | °C | soldering, 10s | 3 | |||
| Storage Temperature Range | -65 | 150 | °C | 3 | |||
| Junction Temperature | 150 | °C | 3 | ||||
| ESD (Human Body Made) HMB | 2 | KV | Human Body Model | 3 | |||
| ESD (Machine Made) MM | 200 | V | Machine Model | 3 | |||
| θJC | θJC | 110 | °C/W | 3 | |||
| Supply Current in Operation | 0.4 | 0.8 | mA | VEN=3.0V, VFB=1.1V | 3 | ||
| Supply Current in Shutdown | 10 | uA | VEN =0 or EN = GND | 3 | |||
| Regulated Feedback Voltage | 0.749 | 0.768 | 0.787 | V | TJ=-40°C to +125°C | 3 | |
| High-Side Switch On-Resistance | 110 | mΩ | 3 | ||||
| Low-Side Switch On-Resistance | 70 | mΩ | 3 | ||||
| High-Side Switch Leakage Current | 10 | uA | VEN=0V, VSW=0V | 3 | |||
| Upper Switch Current Limit | 3 | A | Minimum Duty Cycle | 3 | |||
| Oscillation Frequency | 600 | KHz | 3 | ||||
| Maximum Duty Cycle | 92 | % | VFB=0.768V | 3 | |||
| Minimum On-Time | 60 | nS | 3 | ||||
| Minimum Off-Time | 90 | nS | 3 | ||||
| EN Input Current | 1 | uA | VEN=2V | 3 | |||
| EN Input Current | 0 | uA | VEN=0V | 3 | |||
| VIN Under-Voltage Lockout Threshold | INUVTH | 3.5 | 3.8 | V | 3 | ||
| VIN Under-Voltage Lockout Threshold-Hysteresis | INUVHYS | 200 | mV | 3 | |||
| EN up Threshold | 1.05 | 1.15 | 1.25 | V | VEN-Rising | 3 | |
| EN Threshold Hysteresis | 140 | mV | 3 | ||||
| Soft Start | 1 | 2 | mS | 3 | |||
| Hiccup Frequency | 80 | 120 | Hz | VOUT = 3.3V, VIN = 12V | 3 | ||
| Hiccup Duty cycle | 40 | % | VOUT = 3.3V, VIN = 12V | 3 | |||
| Thermal Shutdown | 160 | ℃ | 3 | ||||
| Thermal Hysteresis | 20 | ℃ | 3 |
CAD (KiCad official)
- Symbol:
RY3825 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
ry3825-etched.step/ry3825-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ry3825.step/ry3825.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
ry3825.step |
97 KB | You want the bare part, or you mark your own boards. |
ry3825-etched.step |
1.7 MB | You want the part with RY3825 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 393 faces against 117 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: RYCHIP datasheet (9 pp, sha256
578aea52c47ad414, 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).