# SGM3752YTN6G

**SGMICRO** · LED Drivers · TSOT-23-6

SGM3752YTN6G from SGMICRO, in a TSOT-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 | SW | output | Switch pin connected to the drain of the internal N-channel power FET, rated from -0.3V to 40V on SW. |
| 2 | GND | power_in | Ground; the signal ground should connect to the power ground via a single point close to the GND pin. |
| 3 | FB | input | Feedback input for current that regulates to VFB of 200mV at full PWM duty cycle, with the sense resistor RSET connected between FB and GND. |
| 4 | CTRL | input | PWM dimming input with logic high above 1.5V and logic low below 0.4V, where CTRL held low for more than 2.5ms enters shutdown. |
| 5 | NC | unconnected | No connection. |
| 6 | VIN | power_in | Input supply pin, operating from 2.7V to 5.5V with UVLO at 2.2V (typ) on falling VIN. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SGMICRO |
| Package | TSOT-23-6 |
| Category | LED Drivers |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Voltage Range | VIN | 2.7 |  | 5.5 | V | Full | 4 |
| Under-Voltage Lockout Threshold (VIN rising) | UVLO |  | 2.3 | 2.5 | V | VIN rising, +25℃ | 4 |
| Voltage Feedback Regulation Voltage (PWM duty cycle 100%) | VREF | 193.5 | 200 | 205.3 | mV | PWM duty cycle 100%, +25℃ | 4 |
| Voltage Feedback Regulation Voltage (PWM duty cycle 10%) | VREF | 18.5 | 20.3 | 22.5 | mV | PWM duty cycle 10%, +25℃ | 4 |
| Voltage Feedback Regulation Voltage (PWM duty cycle 1%) | VREF | 1.65 | 2.5 | 3.25 | mV | PWM duty cycle 1%, +25℃ | 4 |
| FB Pin Bias Current | IFB |  | 0.001 | 0.3 | μA | VFB = 200mV, Full | 4 |
| N-Channel MOSFET On-Resistance | RDS(ON) |  | 0.5 | 0.8 | Ω | +25℃ | 4 |
| Switching Frequency | fSW | 0.9 | 1.2 | 1.45 | MHz | Full | 4 |
| Switching MOSFET Current Limit | ILIM | 1.15 | 1.5 | 1.85 | A | +25℃ | 4 |
| Output Voltage Over-Voltage Threshold | VOVP_SW | 36 | 38 | 39.5 | V | Full | 4 |
| CTRL Logic High Voltage | VH | 1.5 |  |  | V | Full | 4 |
| CTRL Logic Low Voltage | VL |  |  | 0.4 | V | Full | 4 |
| Operating Quiescent Current into VIN | IQ |  | 0.2 | 0.35 | mA | VFB = 400mV, no switching, +25℃ | 4 |
| PWM Dimming Frequency Range | DFR | 10 |  | 100 | kHz | +25℃ | 4 |
| Stable Dimming Range | DR | 0.2 |  | 100 | % | +25℃ | 4 |
| Input Voltage Range (recommended) | VIN | 2.7 |  | 5.5 | V |  | 2 |
| Output Voltage Range | VOUT |  |  | 38 | V | VIN to 38V | 2 |
| Inductor | L | 4.7 |  | 10 | μH |  | 2 |
| Input Capacitor | CIN | 1 |  |  | μF | MIN | 2 |
| Output Capacitor | COUT | 1 |  | 10 | μF |  | 2 |
| Operating Temperature Range | TA | -40 |  | 85 | ℃ |  | 2 |
| Voltage on VIN, CTRL, FB |  | -0.3 |  | 6 | V |  | 2 |
| Voltage on SW |  | -0.3 |  | 40 | V |  | 2 |
| Junction Temperature | TJ |  |  | 150 | ℃ |  | 2 |
| Storage Temperature Range | TSTG | -65 |  | 150 | ℃ |  | 2 |
| Lead Temperature (Soldering) |  |  |  | 260 | ℃ | 10s | 2 |
| Under-Voltage Lockout Threshold (VIN falling) | UVLO |  | 2.2 |  | V | VIN falling, +25℃ | 4 |
| UVLO Hysteresis | VHYS |  | 100 |  | mV | +25℃ | 4 |
| Shutdown Current | ISD |  | 1 |  | μA | CTRL = GND, +25℃ | 4 |
| Voltage Feedback Regulation Voltage (PWM duty cycle 0.2%) | VREF |  | 0.92 |  | mV | PWM duty cycle 0.2%, +25℃ | 4 |
| VREF Filter Time Constant | tREF |  | 0.1 |  | ms | +25℃ | 4 |
| CTRL Pin Internal Pull-Down Resistor | RPD |  | 600 |  | kΩ | +25℃ | 4 |
| CTRL Logic Low Time to Shutdown | tSD |  | 2.5 |  | ms | CTRL high to low, +25℃ | 4 |
| Minimum PWM On-Time |  |  | 40 |  | ns | +25℃ | 4 |
| Thermal Shutdown Threshold | TSHUTDOWN |  | 160 |  | ℃ |  | 4 |
| Thermal Shutdown Hysteresis | THYS |  | 20 |  | ℃ |  | 4 |
| Package Thermal Resistance, junction-to-ambient | θJA |  | 190 |  | ℃/W | TSOT-23-6 | 2 |

## CAD (KiCad official)

- Symbol: `SGM3752YTN6G`
- Footprint: `Package_TO_SOT_SMD:TSOT-23-6`
- 3D model: TSOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `sgm3752ytn6g-etched.step` / `sgm3752ytn6g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sgm3752ytn6g.step` / `sgm3752ytn6g.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/8586204037628354560) (15 pp, sha256 `49fabe408b5f7a48`, 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](docs/sgm3752ytn6g-datasheet.pdf)