# SG3524N

**HGSEMI** · AC-DC Controllers And Regulators · DIP-16

SG3524N from HGSEMI, in a DIP-16. 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 | INV. INPUT | input | Inverting input of the error amplifier, with recommended common-mode input voltage of 1.8 to 3.4 V. |
| 2 | N.I. INPUT | input | Non-inverting input of the error amplifier, with recommended common-mode input voltage of 1.8 to 3.4 V. |
| 3 | OSC. OUTPUT | output | Oscillator output pin, which carries the oscillator waveform (oscillation range 100 Hz to 300 kHz). |
| 4 | +C.L. SENSE | input | Positive input of the current limit amplifier, with differential input to pin 5 limited to -0.3 to 0.3 V and a threshold of about 200 mV. |
| 5 | -C.L. SENSE | input | Negative input of the current limit amplifier, with differential input to pin 4 limited to -0.3 to 0.3 V. |
| 6 | RT | passive | Oscillator timing resistor connection, recommended 1.8 to 100 kOhm. |
| 7 | CT | passive | Oscillator timing capacitor connection, recommended 1 to 1000 nF. |
| 8 | GROUND | power_in | Ground reference for the device. |
| 9 | COMPENSATION | passive | Error amplifier output for loop compensation, which feeds the PWM comparator. |
| 10 | SHUTDOWN | input | Shutdown input that turns off the outputs, with a threshold typically of 0.8 V (0.5 to 1.2 V). |
| 11 | EA | passive | Emitter of output transistor A, rated up to 50 mA per output. |
| 12 | CA | passive | Collector of output transistor A, with collector voltage 0 to 40 V and 50 mA recommended output current. |
| 13 | CB | passive | Collector of output transistor B, with collector voltage 0 to 40 V and 50 mA recommended output current. |
| 14 | EB | passive | Emitter of output transistor B, rated up to 50 mA per output. |
| 15 | +VIN | power_in | Positive supply input, recommended 8 to 40 V (absolute maximum 42 V). |
| 16 | VREF | power_out | 5 V reference voltage output (4.8 to 5.2 V), recommended load 0 to 20 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | DIP-16 |
| Category | Power Management (PMIC) |
| Pins | 16 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Reference output voltage | Vref | 4.8 | 5 | 5.2 | V | IL = 0mA (unless stated otherwise) | 4 |
| Shutdown threshold voltage | Vth | 0.5 | 0.8 | 1.2 | V |  | 5 |
| Input voltage (absolute maximum) | Vin |  |  | 42 | V |  | 3 |
| Collector voltage (absolute maximum) |  |  |  | 40 | V |  | 3 |
| Logic input voltage (absolute maximum) |  | -0.3 |  | 5.5 | V |  | 3 |
| Current-limit differential input (absolute maximum) | Vsense | -0.3 |  | 0.3 | V |  | 3 |
| Output current per channel (absolute maximum) |  |  |  | 100 | mA |  | 3 |
| Reference load current (absolute maximum) |  |  |  | 40 | mA |  | 3 |
| Oscillator charge current (absolute maximum) |  |  |  | 5 | mA |  | 3 |
| Operating junction temperature (absolute maximum) |  |  |  | 150 | °C |  | 3 |
| Operating ambient temperature (absolute maximum) |  | 0 |  | 70 | °C |  | 3 |
| Input voltage | Vin | 8 |  | 40 | V |  | 4 |
| Collector voltage |  | 0 |  | 40 | V |  | 4 |
| Error amplifier common-mode input voltage |  | 1.8 |  | 3.4 | V |  | 4 |
| Current-limit differential input | Vsense | -0.3 |  | 0.3 | V |  | 4 |
| Output current per channel |  | 0 |  | 50 | mA |  | 4 |
| Reference load current |  | 0 |  | 20 | mA |  | 4 |
| Oscillator charge current |  | 0.03 |  | 2 | mA |  | 4 |
| Oscillator frequency |  | 0.1 |  | 300 | KHz |  | 4 |
| Oscillator timing resistance | Rt | 1.8 |  | 100 | KΩ |  | 4 |
| Oscillator timing capacitance | Ct | 1 |  | 1000 | nF |  | 4 |
| Operating junction temperature |  |  |  | 150 | °C |  | 4 |
| Operating ambient temperature |  | 0 |  | 70 | °C |  | 4 |

## CAD (KiCad official)

- Symbol: `SG3524N`
- Footprint: `Package_DIP:DIP-16_W7.62mm`
- 3D model: DIP-16 (KiCad packages3D, STEP)
- 3D model files: `sg3524n-etched.step` / `sg3524n-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sg3524n.step` / `sg3524n.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HGSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603087735070601216) (9 pp, sha256 `183229cbbc51064f`, retrieved 2026-10-19, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/sg3524n-datasheet.pdf)