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XC6902N251MR-G

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Torex Semicon Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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XC6902N251MR-G

Torex Semicon · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23

XC6902N251MR-G from Torex Semicon, in a SOT-23. 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 -VOUT power_out Negative regulated output; the output current must stay within IOUT ≤ Pd/(VOUT-VIN), and the absolute maximum output current is 500 mA.
2 GND power_in Ground reference pin (0 V) for the regulator.
3 -VIN power_in Negative supply input; the recommended input range is -2.4 V to -16 V, with absolute maximum rating GND - 18 V to GND + 0.3 V.

Key specifications

Parameter Value
Manufacturer Torex Semicon
Package SOT-23
Category Power Management (PMIC)
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output Voltage accuracy (VOUT(E) tolerance, VOUT(T)<-2.0V) VOUT(E) 0.985 1.015 ×VOUT(T) IOUT=20mA, VOUT(T)<-2.0V 4
Maximum Output Current IOUTMAX 200 mA VIN=VOUT(T)-2.0V, VOUT(T)≤-2.4V 4
Load Regulation ΔVOUT 20 60 mV VIN=-4.0V, VOUT(T)>-3.0V, 1mA≤IOUT≤100mA 4
Dropout Voltage (Dropout Voltage Chart 1, VOUT(T)=-2.50V) Vdif 129 174 mV IOUT=20mA; VOUT(T)=-2.50V per Dropout Voltage Chart 1 5
Supply Current IBIAS 100 200 μA VIN=-16V, IOUT=0mA 4
Input Voltage VIN -16 -2.4 V 4
Output Voltage Temperature Characteristics ΔVOUT/(ΔTopr·VOUT) -50 50 ppm/℃ IOUT=20mA, -40℃≤Topr≤85℃ 4
Ripple Rejection Ratio PSRR 45 dB VIN={VOUT(T)-1.0}+0.5Vp-pAC, IOUT=20mA, f=1kHz 4
Limit Current ILIM 210 300 mA VIN=VOUT(T)-2.0V, VOUT(T)≤-2.4V 4
Short-Circuit Current ISHORT 80 mA VIN=VOUT(T)-2.0V, Short -VOUT to GND level 4
Detect Thermal Shutdown Temperature TTSD 150 ℃ IC junction temperature 4
Release Thermal Shutdown Temperature TTSR 125 ℃ IC junction temperature 4
Hysteresis Width THYS 25 ℃ TTSD-TTSR 4
Soft Start Time tSS 0.12 0.4 1.2 ms RL=3kΩ, VOUT(T)>-4.0V 4
Input Voltage (absolute maximum) VIN -18 0.3 V GND=0V,Ta=25℃; printed as GND - 18 ~ GND + 0.3 3
Output Current (absolute maximum) IOUT 500 mA 3
Power Dissipation, SOT-23 (IC only) Pd 250 mW IC only 3
Power Dissipation, SOT-23 (40mm x 40mm standard board) Pd 500 mW 40mm x 40mm Standard board, PCB mounted, reference only 3
Operating Ambient Temperature Topr -40 85 ℃ 3
Storage Temperature Tstg -55 125 ℃ 3
Output Capacitor (recommended CL) CL 1 100 μF Output voltage range -0.9V ~ -12V; ceramic, low ESR phase compensation 9

CAD (KiCad official)

  • Symbol: XC6902N251MR-G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: xc6902n251mr-g-etched.step / xc6902n251mr-g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); xc6902n251mr-g.step / xc6902n251mr-g.glb are the bare package body.

Provenance

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

  • Datasheet: Torex Semicon datasheet (20 pp, sha256 91a915412a0c7e96, 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