Voltage Mode PWMs The SG3525ADW is a pulse width modulation (PWM) controller IC manufactured by **Microsemi Corporation (MSC)**.
### **Specifications:**
- **Output Configuration:** Dual, complementary
- **Topology:** Buck, Boost, Flyback, Forward, Push-Pull, Half-Bridge, Full-Bridge
- **Switching Frequency:** Up to 500 kHz
- **Supply Voltage (VCC):** 8V to 35V
- **Output Current (Source/Sink):** 200mA / 500mA
- **Duty Cycle Range:** 0% to 49%
- **Oscillator Frequency Range:** 100Hz to 500kHz
- **Error Amplifier Gain Bandwidth:** 1MHz
- **Soft-Start Time:** Adjustable via external capacitor
- **Undervoltage Lockout (UVLO):** 7V (turn-on), 5.5V (turn-off)
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** SOIC-16 (DW package)
### **Descriptions:**
The SG3525ADW is a high-performance PWM controller designed for switching power supply applications. It features an adjustable oscillator, soft-start capability, error amplifier, and dual alternating outputs for push-pull or bridge configurations. It includes built-in protection features such as undervoltage lockout (UVLO) and pulse-by-pulse current limiting.
### **Features:**
- **Precision Reference:** 5.1V ±1%
- **Separate Oscillator Sync Pin:** Allows synchronization with external clock
- **Adjustable Dead-Time Control:** Prevents shoot-through in bridge circuits
- **Soft-Start Function:** Reduces inrush current
- **Error Amplifier with High Gain Bandwidth:** Ensures stable feedback loop
- **Dual Output Drivers:** Suitable for MOSFET or bipolar transistor drive
- **Low Standby Current:** Typically 8mA
This IC is widely used in DC-DC converters, inverters, and power supply control circuits.
