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XC9140C331MR-G

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Torex Semicon DC-DC Converters, SOT-25-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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XC9140C331MR-G

Torex Semicon · DC-DC Converters · SOT-25-5

XC9140C331MR-G from Torex Semicon, in a SOT-25-5. 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 CE input Chip Enable: H is active for all series, L selects stand-by (XC9140A) or bypass mode (XC9140C), and the pin must not be left open, with CE H voltage 0.75V min and CE L voltage 0.3V max per the electrical characteristics.
2 GND power_in Ground reference for all voltages in the datasheet; the absolute maximum ratings are described based on GND.
3 VBAT power_in Power input, with an absolute maximum BAT pin voltage of -0.3 to 7.0 V.
4 VOUT power_out Output voltage pin, with an absolute maximum VOUT pin voltage of -0.3 to 7.0 V.
5 LX output Switching pin with an absolute maximum LX pin voltage of -0.3 to VOUT + 0.3 or 7.0 V (whichever is lowest) and an LX pin current rating of 700 mA.

Key specifications

Parameter Value
Manufacturer Torex Semicon
Package SOT-25-5
Category Power Management ICs
Pins 5

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 VBAT 5.5 V 5
Output Voltage (3.3V group) VOUT(E) 3.234 3.366 V VPULL=1.5V, Voltage to start oscillation while VOUT is decreasing 8
Operation Start Voltage VST1 0.9 V IOUT=1mA 5
CE H Voltage VCEH 0.75 5.5 V VBAT=VPULL=1.5V, VOUT=VOUT(T)×0.98V (*1), While VCE=0.3→0.75V, Voltage to start oscillation 5
CE L Voltage VCEL 0.3 V VBAT=VPULL=1.5V, VOUT=VOUT(T)×0.98V (*1), While VCE=0.75→0.3V, Voltage to stop oscillation 5
CE H Current ICEH -0.1 0.1 μA VBAT=VCE=VLX=VOUT=5.5V 5
CE L Current ICEL -0.1 0.1 μA VBAT=VLX=VOUT=5.5V, VCE=0V 5
Supply Current (3.3V group) Iq 6.3 10 μA Oscillation stops, VOUT=VOUT(T)+0.5V (*1) 8
Input Pin Current IBAT 0.25 1 μA VOUT=VOUT(T)+0.5V (*1) 5
Bypass Mode Current IBYP 3.5 6.1 μA VBAT=VLX=5.5V, VCE=0V 5
PFM Switching Current IPFM 295 350 405 mA IOUT=3mA 5
Maximum ON Time tONMAX 3.1 4.6 6 μs VPULL=1.5V, VOUT=VOUT(T)×0.98V (*1) 5
LX SW Pch ON Resistance (3.3V group) RLXP 0.65 0.85 Ω VBAT=VLX=VCE=VOUT(T)+0.5V (*1), IOUT=200mA 8
LX SW Nch ON Resistance RLXN 0.6 Ω VBAT=VCE=3.3V, VOUT=1.7V 5
Operation Hold Voltage VHLD 0.7 V RL=1kΩ 5
Efficiency (VOUT(T)=3.3V) EFFI 85 % VBAT=VCE=1.8V, VOUT(T)=3.3V, IOUT=30mA 5
Input Voltage (absolute maximum) VBAT -0.3 7 V BAT Pin Voltage, relative to GND 3
VOUT Pin Voltage VOUT -0.3 7 V Relative to GND 3
CE Pin Voltage VCE -0.3 7 V Relative to GND 3
LX Pin Voltage VLX -0.3 V Max is VOUT+0.3V or 7.0V (*1), whichever is lowest 3
LX Pin Current ILX 700 mA 3
Power Dissipation SOT-25 Pd 250 mW Ta=25℃, SOT-25 3
Operating Ambient Temperature Topr -40 85 ˚C 3
Storage Temperature Tstg -55 125 ˚C 3

CAD (KiCad official)

  • Symbol: XC9140C331MR-G
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-25-5 (KiCad packages3D, STEP)
  • 3D model files: xc9140c331mr-g-etched.step / xc9140c331mr-g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); xc9140c331mr-g.step / xc9140c331mr-g.glb are the bare package body.

Provenance

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

  • Datasheet: Torex Semicon datasheet (28 pp, sha256 7c50d9235db0576f, retrieved 2026-10-28, 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