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FR9205FS6

Public Made by Adom

by adom

Fitipower Integrated Tech DC-DC Converters, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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FR9205FS6

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fr9205fs6.step / fr9205fs6.glb are 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, primary claude-sonnet-5-5 (text), consensus claude-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).

Datasheet PDF