SG3525
The SG3525 is a voltage-mode PWM controller designed for stable and efficient operation in switching power supplies, DC-DC converters, and industrial power electronics. It supports an input voltage range of 8 V to 35 V and provides an adjustable oscillator frequency from 100 Hz to 400 kHz, allowing flexibility across low- and high-frequency power designs. The IC includes a regulated 5.1 V ±1% reference, soft-start, and under-voltage lockout to ensure predictable startup and steady performance in systems such as solar inverters, UPS units, motor-drive power stages, and renewable-energy converters.
The device incorporates a totem-pole output stage capable of sourcing or sinking up to 200 mA, enabling direct MOSFET gate driving in many applications without external driver circuits. Additional functions—such as adjustable deadtime, shutdown capability, and sync input support—enhance control accuracy and coordination in multi-controller or synchronized switching systems. These features contribute to consistent operation in industrial and commercial environments where reliability and control precision are essential.
The SG3525 is available in DIP and SOIC package options and meets standard compliance requirements, including RoHS and Pb-Free variants. Its feature set makes it suitable for regulated power conversion, inverter stages, battery-charging systems, and general-purpose PWM control where stable frequency, dependable reference regulation, and integrated protection are required.
Key Specs
| Parameter | Value |
|---|---|
| Input Voltage Range | 8 V – 35 V |
| Frequency Range | 100 Hz – 400 kHz |
| Output Drive | ±200 mA totem-pole |
| Reference Voltage | 5.1 V ±1% |
| Soft Start / UVLO | Integrated |
| Sync Capability | Supported |
| Deadtime Control | Adjustable |
| Applications | Power supplies, DC-DC converters, inverters, EV chargers, UPS systems |
| Package Options | DIP / SOIC |
| Manufacturer | onsemi |
| Compliance | RoHS & Pb-Free |
We dispatch all orders through Leopard Courier and TCS, while bulk or heavy shipments are sent via cargo (bilty) for safer handling and better rates. Standard delivery time is 2–3 working days for both courier and cargo deliveries, depending on your location. Orders are dispatched within 24 hours after payment confirmation, and the tracking number is shared on WhatsApp once shipped. Shipping charges depend on parcel weight and destination, and may be waived for bulk or corporate orders. Please ensure your contact details and address are accurate to avoid delays. For urgent delivery or specific shipping requirements, contact us directly on WhatsApp at 0303 56888 44.
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