component

SGM2551AYN5G

Public Made by Adom

by adom

SGMICRO Power Distribution Switches, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SGM2551AYN5G

SGMICRO · Power Distribution Switches · SOT-23-5

SGM2551AYN5G 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 IN power_in Switch input; a 0.1μF or larger ceramic capacitor must be added between the IN pin and GND.
2 GND power_in Ground.
3 EN input Enable input; logic high enables the device (VIH min 1.4V, VIL max 0.3V).
4 ILIM passive Programmable current limit pin; an external resistor with 20kΩ ≤ RILIM ≤ 387kΩ sets the current limit threshold.
5 OUT power_out Switch output.

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
High-side MOSFET On Resistance RDS(ON) 90 130 mΩ 4
Output Rise Time tR 1.8 3.5 ms VIN = 5.5V, CL = 1μF, RL = 100Ω, Figure 2 4
Output Rise Time tR 1.1 2.5 ms VIN = 2.5V, CL = 1μF, RL = 100Ω, Figure 2 4
Output Fall Time tF 0.3 0.4 ms VIN = 5.5V 4
Logic High of Enable Pin VIH 1.4 V 4
Logic Low of Enable Pin VIL 0.3 V 4
Input Current IEN 0.01 1 μA VEN = 5.5V 4
Turn-On Time tON 3 5 ms CL = 1μF, RL = 100Ω, Figure 2 4
Turn-Off Time tOFF 1.6 2.5 ms 4
Current Limit Threshold (Maximum DC output current IOUT delivered to load) ILIM 460 545 610 mA OUT connected to GND through 4Ω; VIN = 3V, RILIM = 68kΩ 4
Reverse-Voltage Comparator Trip Point (VOUT - VIN) 115 160 205 mV 4
Time from Reverse-Voltage Condition to MOSFET Turn-Off 3.5 5.5 7.5 ms 4
Supply Current, Low-Level Output IIN(OFF) 0.1 2.5 µA VIN = 5.5V, No load on OUT, VEN = 0V 4
Supply Current, High-Level Output IIN(ON) 71 105 μA RILIM = 36kΩ, VIN = 5.5V, No load on OUT 4
Supply Current, High-Level Output IIN(ON) 62 95 μA RILIM = 68kΩ, VIN = 5.5V, No load on OUT 4
Reverse Leakage Current IREV 0.01 1 μA VOUT = 5.5V, VIN = 0V 4
Hysteresis (Under-Voltage Lockout) 140 mV 4
Enable Voltage Range VEN 0 5.5 V 2
Continuous Output Current Range IOUT 0 1.5 A 2
Current Limit Threshold Resistor Range RILIM 20 387 kΩ 2
Minimum Input Decoupling Capacitance CIN 0.1 μF 2
Operating Temperature Range TA -40 85 ℃ 2
VIN, VOUT, EN and ILIM to GND -0.3 6 V 2
ILIM Source Current 1 mA 2
Junction Temperature TJ 150 ℃ 2
Storage Temperature Range TSTG -65 150 ℃ 2
Lead Temperature (Soldering) 260 ℃ 10s 2
Package Thermal Resistance, SOT-23-5 junction-to-ambient θJA 250 ℃/W SOT-23-5 2

CAD (KiCad official)

  • Symbol: SGM2551AYN5G
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: sgm2551ayn5g-etched.step / sgm2551ayn5g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sgm2551ayn5g.step / sgm2551ayn5g.glb are the bare package body.

Provenance

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

  • Datasheet: SGMICRO datasheet (11 pp, sha256 6a0dc1d2b28116fd, retrieved 2026-10-17, 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