SG3525A PWM Controller 500mA IC DIP-16
The SG3525A is a high-performance Pulse Width Modulation (PWM) controller IC designed for switching power supply and power conversion applications. It integrates a precision 5.1V voltage reference, oscillator, error amplifier, PWM comparator, soft-start circuit, shutdown control, undervoltage lockout, and dual totem-pole output drivers into a single 16-pin DIP package. These integrated functions significantly reduce external component count while providing excellent regulation and reliable operation.
Operating from an 8V to 35V supply, the SG3525A supports oscillator frequencies from 100Hz to 400kHz and delivers dual output drive capability suitable for push-pull, half-bridge, and full-bridge converter topologies. Its adjustable dead-time control, synchronization input, pulse-by-pulse shutdown, and soft-start features make it a popular choice for professional power supply, inverter, UPS, and motor control designs.
Features:
- High-performance PWM controller.
- Integrated precision voltage reference.
- Built-in oscillator with wide frequency range.
- Dual totem-pole output drivers.
- Adjustable dead-time control.
- Built-in soft-start function.
- Pulse-by-pulse shutdown protection.
- Undervoltage lockout protection.
- External synchronization capability.
- Error amplifier with wide common-mode range.
- Low external component requirement.
- Suitable for push-pull, half-bridge, and full-bridge converters.
- Stable operation for switching power applications.
Specifications:
| Parameter | Value |
|---|---|
| IC Type | PWM Controller |
| Package | DIP-16 |
| Supply Voltage (VCC) | 8V – 35V |
| Maximum Supply Voltage | 40V |
| Reference Voltage | 5.1V ±1% |
| Oscillator Frequency | 100Hz – 400kHz |
| Output Configuration | Dual Totem-Pole Outputs |
| Peak Output Current | ±400mA (Recommended), ±500mA Maximum |
| Reference Output Current | 20mA Recommended |
| Operating Temperature | 0°C to +70°C |
| Number of Pins | 16 |
Pinout:
Applications:
- Switch-mode power supplies (SMPS).
- DC-DC converters.
- DC-AC inverters.
- UPS systems.
- Battery chargers.
- Motor speed controllers.
- Push-pull converters.
- Half-bridge converters.
- Full-bridge converters.
- Industrial power supplies.
- Solar power converters.
- LED power supplies.
Package Includes:
- 1 × SG3525A PWM Controller 500mA IC DIP-16.