# SGM2553YN6G

**SGMICRO** · Power Distribution Switches · SOT-23-6

SGM2553YN6G from SGMICRO, in a SOT-23-6. 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 | Input voltage; connect a 0.1µF or greater ceramic capacitor from IN to GND as close to the IC as possible. |
| 2 | GND | power_in | Ground; the datasheet specifies connecting it externally to the exposed pad. |
| 3 | EN | input | Enable input; logic high turns on the power switch, with VIH of 1.4V minimum and VIL of 0.3V maximum. |
| 4 | FAULT | output | Active-low open-drain output asserted during over-current, over-temperature, or reverse-voltage conditions; continuous FAULT sink current is limited to 25mA absolute maximum and 0 to 10mA recommended. |
| 5 | ILIM | passive | External resistor sets the current limit threshold; recommended 20kΩ ≤ RILIM ≤ 387kΩ. |
| 6 | OUT | power_out | Power switch output; continuous output current range is 0A to 1.5A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SGMICRO |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Enable Voltage Range |  | 0 |  | 5.5 | V |  | 2 |
| Continuous Output Current Range |  | 0 |  | 1.5 | A |  | 2 |
| Current Limit Threshold Resistor Range | RILIM | 20 |  | 387 | kΩ |  | 2 |
| Continuous FAULT Sink Current Range |  | 0 |  | 10 | mA |  | 2 |
| Minimum Input Decoupling Capacitance |  | 0.1 |  |  | μF |  | 2 |
| Operating Temperature Range |  | -40 |  | 85 | ℃ |  | 2 |
| VIN, VOUT, EN, ILIM and FAULT to GND |  | -0.3 |  | 6 | V |  | 2 |
| ILIM Source Current | ILIM |  |  | 1 | mA |  | 2 |
| Junction Temperature |  |  |  | 150 | ℃ |  | 2 |
| Storage Temperature Range |  | -65 |  | 150 | ℃ |  | 2 |
| Lead Temperature (Soldering, 10s) |  |  |  | 260 | ℃ | Soldering, 10s | 2 |
| 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 | VIN = 3V, RILIM = 68kΩ, OUT connected to GND through 4Ω | 4 |
| Response Time to Short Circuit | tIOS |  |  | 2 | μs | Figure 3 | 4 |
| Reverse-Voltage Comparator Trip Point |  | 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 (RILIM = 36kΩ) | IIN(ON) |  | 71 | 105 | μA | RILIM = 36kΩ, VIN = 5.5V, No load on OUT | 4 |
| Supply Current, High-Level Output (RILIM = 68kΩ) | IIN(ON) |  | 62 | 95 | μA | RILIM = 68kΩ | 4 |
| Reverse Leakage Current | IREV |  | 0.01 | 1 | μA | VOUT = 5.5V, VIN = 0V | 4 |
| Under-Voltage Lockout Threshold | VUVLO | 2.36 |  | 2.47 | V | VIN Rising | 4 |
| Under-Voltage Lockout Threshold Hysteresis |  |  | 140 |  | mV |  | 4 |
| FAULT Output Low Voltage |  |  | 95 | 150 | mV | IFAULT = 1mA | 4 |
| Off-State Leakage |  |  | 0.02 | 1 | μA | VFAULT = 5.5V | 4 |
| FAULT Deglitch (over-current) |  | 6.5 | 10 | 14 | ms | FAULT assertion or de-assertion due to over-current condition | 4 |
| FAULT Deglitch (reverse-voltage) |  | 3.5 | 5.5 | 7.5 | ms | FAULT assertion or de-assertion due to reverse-voltage condition | 4 |
| Thermal Shutdown Threshold |  |  | 140 |  | ℃ |  | 4 |
| Thermal Shutdown Threshold in Current Limit |  |  | 115 |  | ℃ |  | 4 |
| Thermal Shutdown Hysteresis |  |  | 10 |  | ℃ |  | 4 |
| Package Thermal Resistance, SOT-23-6 | θJA |  | 260 |  | ℃/W | SOT-23-6 package | 2 |

## CAD (KiCad official)

- Symbol: `SGM2553YN6G`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `sgm2553yn6g-etched.step` / `sgm2553yn6g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sgm2553yn6g.step` / `sgm2553yn6g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SGMICRO datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588941065709891584) (15 pp, sha256 `53846d51e6194fd2`, 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](docs/sgm2553yn6g-datasheet.pdf)