component
FR9205FS6
Public Made by Adomby adom
Fitipower Integrated Tech DC-DC Converters, SOT-23-6. Pinout cross-checked by two models against 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
markdownFR9205FS6
Fitipower Integrated Tech · DC-DC Converters · SOT-23-6
FR9205FS6 from Fitipower Integrated Tech, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground pin. |
| 2 | LX | passive | Power switching node; connect an external inductor to this switching node (abs max -0.3V to VIN+0.3V). |
| 3 | VIN | power_in | Power supply input pin (4.5V to 18V operating); place input capacitors as close as possible from VIN to GND to avoid noise influence. |
| 4 | FB | input | Voltage feedback input; connect FB and VOUT with a resistive voltage divider, the IC regulates FB at 0.765V. |
| 5 | SHDN | input | Enable input pin; pull high to turn on IC and low to turn off IC (low <0.5V, high >1.5V), connect to VIN with a 100kΩ resistor for self-startup. |
| 6 | BST | passive | High side gate drive boost pin; a 0.1uF~1uF capacitor must be connected from this pin to LX to fully turn on the internal high side NMOS. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Fitipower Integrated Tech |
| Package | SOT-23-6 |
| Category | Power Supply Chip |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Feedback Voltage | VFB | 0.753 | 0.765 | 0.776 | V | 4.5V≦VIN≦17V | 5 |
| VIN Shutdown Supply Current | ISD | 1 | 10 | μA | EN=0V | 5 | |
| Feedback Input Current | IFB | 0.01 | 0.1 | μA | VFB=1V | 5 | |
| VIN Quiescent Current | IDDQ | 0.3 | mA | EN=2V, VFB=1V | 5 | ||
| High-Side MOSFET RDS(ON) | RDS(ON) | 145 | mΩ | 5 | |||
| Low-Side MOSFET RDS(ON) | RDS(ON) | 90 | mΩ | 5 | |||
| Valley Current Limit | ILIMIT | 3 | A | Note 3: not production tested | 5 | ||
| On Time | TON | 130 | ns | VIN=12V, VOUT=1.05V | 5 | ||
| Minimum Off Time | TOFF(MIN) | 200 | ns | VFB=0.4V | 5 | ||
| Input Supply Voltage UVLO Threshold | VUVLO(Vth) | 4 | V | VIN Rising | 5 | ||
| UVLO Threshold Hysteresis | VUVLO(HYS) | 0.35 | V | 5 | |||
| Internal Soft-Start Period | TSS | 1.5 | ms | Note 3: not production tested | 5 | ||
| EN Input Low Voltage | VEN(L) | 0.5 | V | 5 | |||
| EN Input High Voltage | VEN(H) | 1.5 | V | 5 | |||
| EN Input Current | IEN | 2 | μA | EN=2V | 5 | ||
| Thermal Shutdown Threshold | TSD | 160 | °C | Note 3: not production tested | 5 | ||
| Thermal Shutdown Hysteresis | THYS | 30 | °C | Note 3: not production tested | 5 | ||
| Supply Voltage | VIN | -0.3 | 20 | V | 4 | ||
| Enable Voltage | VEN | -0.3 | 20 | V | 4 | ||
| LX Voltage | VLX | -0.3 | V | max is VIN +0.3V | 4 | ||
| Dynamic LX Voltage | -5 | V | 15ns duration; max is VIN +5V | 4 | |||
| BST Pin Voltage | VBST | -0.3 | V | max is VLX +6.5V | 4 | ||
| All Other Pins Voltage | -0.3 | 6 | V | 4 | |||
| Maximum Junction Temperature | TJ | 150 | °C | 4 | |||
| Storage Temperature | TS | -65 | 150 | °C | 4 | ||
| Lead Temperature | 260 | °C | Soldering, 10sec | 4 | |||
| Supply Voltage | VIN | 4.5 | 18 | V | 4 | ||
| Operation Temperature Range | -40 | 85 | °C | 4 | |||
| Package Thermal Resistance | θJA | 250 | °C/W | SOT-23-6 | 4 | ||
| Package Thermal Resistance | θJC | 110 | °C/W | SOT-23-6 | 4 |
CAD (KiCad official)
- Symbol:
FR9205FS6 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
fr9205fs6-etched.step/fr9205fs6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fr9205fs6.step/fr9205fs6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Fitipower Integrated Tech datasheet (12 pp, sha256
ee0d0f1a82c69413, retrieved 2026-10-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).