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SGM2209-ADJXN5G

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SGMICRO Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SGM2209-ADJXN5G

SGMICRO · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

SGM2209-ADJXN5G from SGMICRO, in a SOT-23-5. 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 GND power_in Ground pin for the regulator.
2 VIN power_in Input voltage supply pin; the datasheet recommends a 2.2μF or larger ceramic capacitor from VIN to ground, placed as close as possible to the pin, and the input range is -2.7V to -24V.
3 EN input Enable pin: drive EN 2.0V above or below ground to turn the regulator on and drive it to ground to turn it off; connect EN to VIN for automatic startup.
4 ADJ input Adjustable input (adjustable version only): connect to the midpoint of an external resistor divider to set the output voltage, with the resistors placed as close as possible to this pin.
5 VOUT power_out Regulator output; the datasheet recommends a ceramic capacitor of 1.5μF to 10μF placed as close as possible to the VOUT pin.

Key specifications

Parameter Value
Manufacturer SGMICRO
Package SOT-23-5
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
VIN to GND (absolute maximum) VIN -25 0.3 V 4
VOUT to GND (absolute maximum, upper limit) VOUT 0.3 V lower limit printed as VIN - 0.3V 4
EN to GND (absolute maximum, upper limit) EN 5 V lower limit printed as VIN - 0.3V 4
EN to VIN (absolute maximum) EN -0.3 25 V 4
ADJ to GND (absolute maximum, upper limit) ADJ 0.3 V lower limit printed as VOUT 4
Junction Temperature (absolute maximum) TJ 150 ℃ 4
Storage Temperature Range TSTG -65 150 ℃ 4
Lead Temperature (Soldering) 260 ℃ soldering, 10s 4
Input Voltage Range (recommended) VIN -2.7 -24 V 4
Operating Junction Temperature Range (recommended) TJ -40 125 ℃ 4
Input Capacitance, CIN (recommended) CIN 1.5 μF MIN 4
Output Capacitance, COUT (recommended) COUT 1.5 10 μF 4
Input Voltage Range VIN -2.7 -24 V IOUT = -250mA, +25℃ 6
Input Voltage Range VIN -3 -24 V IOUT = -350mA, +25℃ 6
Input Voltage Range VIN -3.3 -24 V IOUT = -500mA, +25℃ 6
Under-Voltage Lockout Threshold, VIN falling VUVLO -2.42 -2.5 V VIN falling, -40℃ to +125℃ 6
Under-Voltage Lockout Threshold, VIN rising VUVLO -2.24 -2.33 V VIN rising, -40℃ to +125℃ 6
Operating Supply Current IGND -42 -83 µA IOUT = 0µA, -40℃ to +125℃ 6
Operating Supply Current IGND -1.2 -2.1 mA IOUT = -500mA, -40℃ to +125℃ 6
Shutdown Current ISHDN -1.1 -3 µA VEN = GND, -40℃ to +125℃ 6
Shutdown Current ISHDN -1.2 -10 µA VEN = GND, VIN = -24V, -40℃ to +125℃ 6
ADJ Pin Input Bias Current IADJ -3.5 3.5 nA VADJ = -1.3V, VIN = -2.7V to -24V, -40℃ to +125℃ 6
Output Voltage Accuracy VOUT -1 1 % IOUT = -10mA, +25℃ 6
Output Voltage Accuracy VOUT -1.5 1.5 % VIN = (VOUT(NOM) - 0.5V) to -24V, IOUT = -1mA to -500mA, -40℃ to +125℃ 6
Feedback Voltage VADJ -1.188 -1.2 -1.212 V IOUT = -10mA, +25℃ 6
Feedback Voltage VADJ -1.182 -1.218 V VIN = (VOUT(NOM) - 0.5V) to -24V, IOUT = -1mA to -500mA, -40℃ to +125℃ 6
Line Regulation ΔVOUT/ΔVIN 0.001 0.03 %/V VIN = (VOUT(NOM) - 0.5V) to -24V, -40℃ to +125℃ 6
Load Regulation ΔVOUT/VOUT 0.03 0.8 % IOUT = -1mA to -500mA, -40℃ to +125℃ 6
Output Current Limit ILIM -0.68 -1.05 A VIN = MIN(VOUT(NOM) - 1V, -4V), +25℃ 6
Positive Enable High-Level Voltage VEN(+HI) 1.22 V -40℃ to +125℃ 7
Positive Enable Low-Level Voltage VEN(+LO) 0.3 V -40℃ to +125℃ 7
Negative Enable High-Level Voltage VEN(-HI) -2 V -40℃ to +125℃ 7
Negative Enable Low-Level Voltage VEN(-LO) -0.55 V -40℃ to +125℃ 7
EN Positive Input Current IEN_P 0.9 3 µA VEN = 5V, VIN = -19V, -40℃ to +125℃ 7
EN Negative Input Current IEN_N -0.1 -1 µA VEN = -24V, VIN = -24V, -40℃ to +125℃ 7
Output Current Limit Short-Circuit Current ISHORT -360 mA VOUT = 0V, VIN = MIN(VOUT(NOM) - 1V, -4V), +25℃ 6
Power Supply Rejection Ratio (adjustable, 1kHz) PSRR -71 dB VIN = -16V, VOUT(NOM) = -15V, ΔVRIPPLE = 0.2VP-P, adjustable mode, CNR = 100nF, RNR = 13kΩ, RFB1 = 150kΩ, RFB2 = 13kΩ, f = 1kHz, +25℃ 7
Power Supply Rejection Ratio (adjustable, 10kHz) PSRR -60 dB VIN = -16V, VOUT(NOM) = -15V, ΔVRIPPLE = 0.2VP-P, adjustable mode, CNR = 100nF, RNR = 13kΩ, RFB1 = 150kΩ, RFB2 = 13kΩ, f = 10kHz, +25℃ 7
Power Supply Rejection Ratio (adjustable, 100kHz) PSRR -44 dB VIN = -16V, VOUT(NOM) = -15V, ΔVRIPPLE = 0.2VP-P, adjustable mode, CNR = 100nF, RNR = 13kΩ, RFB1 = 150kΩ, RFB2 = 13kΩ, f = 100kHz, +25℃ 7
Thermal Shutdown Temperature TSHDN 160 ℃ 7
Thermal Shutdown Hysteresis ΔTSHDN 20 ℃ 7
Thermal Resistance Junction-to-Ambient, SOT-23-5 θJA 186 ℃/W SOT-23-5 4
Thermal Resistance Junction-to-Board, SOT-23-5 θJB 45 ℃/W SOT-23-5 4
Thermal Resistance Junction-to-Case, SOT-23-5 θJC 74 ℃/W SOT-23-5 4

CAD (KiCad official)

  • Symbol: SGM2209-ADJXN5G
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: sgm2209-adjxn5g-etched.step / sgm2209-adjxn5g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sgm2209-adjxn5g.step / sgm2209-adjxn5g.glb are the bare package body.

Provenance

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

  • Datasheet: SGMICRO datasheet (20 pp, sha256 7475c1f0b0904b30, 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