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XC9140A331MR-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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XC9140A331MR-G

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

XC9140A331MR-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: driving it High activates the device on all series, Low puts it in stand-by (XC9140A/B) or bypass mode (XC9140C), and the pin must not be left open.
2 GND power_in Ground reference; all voltages on this device are specified relative to GND.
3 VBAT power_in Power input with an operating input voltage range of 0.7 V to 5.5 V and an absolute maximum rating of -0.3 V to 7.0 V.
4 VOUT power_out Boosted output voltage pin, with an absolute maximum rating of -0.3 V to 7.0 V.
5 LX output Switching node driving the inductor, with an absolute maximum voltage of -0.3 V to VOUT + 0.3 V or 7.0 V (the lower value applies) and a maximum LX pin current of 700 mA.

Key specifications

Parameter Value
Manufacturer Torex Semicon
Package SOT-25-5
Category Power Management (PMIC)
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 6
Output Voltage (effective) VOUT(E) 3.234 3.366 V VPULL=1.5V, Voltage to start oscillation while VOUT is decreasing 10
Operation Start Voltage VST1 0.9 V IOUT=1mA 6
Supply Current Iq 6.3 10 μA Oscillation stops, VOUT=VOUT(T)+0.5V (*1) 10
Input Pin Current IBAT 0.25 1 μA VOUT=VOUT(T)+0.5V (*1) 6
Stand-by Current ISTB 0.1 1 μA VBAT=VLX=VOUT(T) (*1), VOUT=VCE=0V 6
LX Leak Current ILXL 0.1 1 μA VBAT=VLX=VOUT(T) (*1), VOUT=VCE=0V 6
PFM Switching Current IPFM 295 350 405 mA IOUT=3mA 6
Maximum ON Time tONMAX 3.1 4.6 6 μs VPULL=1.5V, VOUT=VOUT(T)×0.98 (*1) 6
LX SW Pch ON Resistance RLXP 0.65 0.85 Ω VBAT=VLX=VCE=VOUT(T)+0.5V (*1), IOUT=200mA 10
CE H Voltage VCEH 0.75 5.5 V VBAT=VPULL=1.5V, VOUT=VOUT(T)×0.98 (*1), While VCE=0.3→0.75V, Voltage to start oscillation 6
CE L Voltage VCEL 0.3 V VBAT=VPULL=1.5V, VOUT=VOUT(T)×0.98 (*1), While VCE=0.75→0.3V, Voltage to stop oscillation 6
CE H Current ICEH -0.1 0.1 μA VBAT=VCE=VLX=VOUT=5.5V 6
CE L Current ICEL -0.1 0.1 μA VBAT=VLX=VOUT=5.5V, VCE=0V 6
BAT Pin Voltage VBAT -0.3 7 V 5
LX Pin Voltage VLX -0.3 V Maximum printed as VOUT + 0.3 or 7.0 (*1); see note (*1) 5
VOUT Pin Voltage VOUT -0.3 7 V 5
CE Pin Voltage VCE -0.3 7 V 5
LX Pin Current ILX 700 mA 5
Power Dissipation SOT-25 Pd 250 mW Ta=25℃; board condition not stated for this value 5
Power Dissipation SOT-25 (40mm x 40mm standard board) Pd 600 mW Ta=25℃; PCB mounted, reference only 5
Power Dissipation SOT-25 (JESD51-7 board) Pd 760 mW Ta=25℃; PCB mounted, reference only 5
Operating Ambient Temperature Topr -40 85 ˚C 5
Storage Temperature Tstg -55 125 ˚C 5
Input Voltage Range (operating hold to max) VBAT 0.7 5.5 V Features list: input voltage range, operating hold voltage 0.7V to 5.5V 1

CAD (KiCad official)

  • Symbol: XC9140A331MR-G
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-25-5 (KiCad packages3D, STEP)
  • 3D model files: xc9140a331mr-g-etched.step / xc9140a331mr-g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); xc9140a331mr-g.step / xc9140a331mr-g.glb are the bare package body.

Provenance

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

  • Datasheet: Torex Semicon datasheet (33 pp, sha256 2d1d53714528e117, retrieved 2026-10-18, 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