component

FR9850S6

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.

componentpower management (pmic)fr9850s6factory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 8d ago
viewers fr9850s6: viewers · Ray 8d ago
fr9850s6-etched.glb Publish 0.1.0 · Ray 8d ago
fr9850s6-etched.step fr9850s6: factory component page (tier=lcsc) · Ray 8d ago
fr9850s6-hero.glb fr9850s6: hero GLB from the etched model (keeps the MPN mark) · Ray 8d ago
fr9850s6-hero.overlay.json Publish 0.1.0 · Ray 8d ago
fr9850s6.glb Publish 0.1.0 · Ray 8d ago
fr9850s6.kicad_mod Publish 0.1.0 · Ray 8d ago
fr9850s6.kicad_sym Publish 0.1.0 · Ray 8d ago
fr9850s6.lbr Publish 0.1.0 · Ray 8d ago
fr9850s6.step Publish 0.1.0 · Ray 8d ago
package.json Publish 0.1.0 · Ray 8d ago
page.json Set visibility: public · Ray 8d ago
README.md Publish 0.1.0 · Ray 8d ago

FR9850S6

Fitipower Integrated Tech · DC-DC Converters · SOT-23-6

FR9850S6 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 BST passive High-side gate drive boost pin, with a capacitor rated 0.1uF to 1uF connected from this pin to LX to fully turn on the internal high-side NMOS.
2 GND power_in Ground pin; the input capacitors should be placed as close as possible between VIN and GND.
3 FB input Voltage feedback input connected to VOUT through a resistive divider, regulated at 0.6V (VFB 0.591V to 0.609V).
4 SHDN input Enable input: pull high to turn the IC on and low to turn it off (VIH 1.5V min, VIL 0.5V max), and connect to VIN through a 100kΩ resistor for self-startup.
5 VIN power_in Power supply input with a recommended range of 4.5V to 17V and an absolute maximum of 20V; input capacitors should be placed as close as possible to VIN and GND.
6 LX output Power switching node that connects to the external inductor, with a voltage limit of -0.3V to VIN+0.3V (dynamic -5V to VIN+5V for 15ns).

Key specifications

Parameter Value
Manufacturer Fitipower Integrated Tech
Package SOT-23-6
Category Power Management (PMIC)
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 0.591 0.6 0.609 V 4.5V≦VIN≦17V 5
Feedback Input Current IFB 0.01 0.1 μA VFB=1V 5
VIN Shutdown Supply Current ISD 1 10 μA H =0V 5
Supply Voltage VIN VIN -0.3 20 V 4
Enable Voltage H -0.3 20 V 4
LX Voltage VLX -0.3 V 4
Dynamic LX Voltage -5 V 15ns duration 4
BST Pin Voltage VBST -0.3 V 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 (Soldering) 260 °C 10 sec 4
Supply Voltage VIN (recommended) VIN 4.5 17 V 4
Operation Temperature Range -40 85 °C 4
Package Thermal Resistance, junction-to-ambient (SOT-23-6) θJA 250 °C/W Note 2: measured at 25°C ambient, JEDEC-51-7 4-layer board 4
Package Thermal Resistance, junction-to-case (SOT-23-6) θJC 110 °C/W 4
VIN Quiescent Current IDDQ 0.3 mA H =2V, VFB=1V 5
High-Side MOSFET RDS(ON) RDS(ON) 150 mΩ 5
Low-Side MOSFET RDS(ON) RDS(ON) 80 mΩ 5
High-Side MOSFET Current Limit ILIMIT(HS) 3.2 A 5
On Time TON 150 ns VIN=12V, VOUT=1.05V 5
Minimum Off Time TOFF(MIN) 180 ns VFB=0.4V 5
Input Supply Voltage UVLO Threshold VUVLO(Vth) 4.3 V VIN Rising 5
UVLO Threshold Hysteresis VUVLO(HYS) 0.35 V 5
Internal Soft-Start Period TSS 1 ms 5
H Input Low Voltage 0.5 V 5
H Input High Voltage 1.5 V 5
H Input Current 2 μA H =2V 5
Thermal Shutdown Threshold TSD 160 °C 5
Thermal Shutdown Hysteresis THYS 30 °C 5

CAD (KiCad official)

  • Symbol: FR9850S6
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: fr9850s6-etched.step / fr9850s6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fr9850s6.step / fr9850s6.glb are the bare package body.

Provenance

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

  • Datasheet: Fitipower Integrated Tech datasheet (10 pp, sha256 9e875006971d6db7, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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