Regulating Pulse Width Modulators The SG3525AJ is a pulse width modulation (PWM) controller IC manufactured by LINEAR (now part of Analog Devices). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** LINEAR (now part of Analog Devices)
- **Part Number:** SG3525AJ
- **Type:** PWM Controller IC
- **Package:** 16-Pin DIP (Dual In-line Package)
- **Operating Voltage Range:** 8V to 35V
- **Output Current (Per Channel):** 100mA (sink/source)
- **Switching Frequency Range:** 100Hz to 500kHz (adjustable via external components)
- **Duty Cycle Range:** 0% to 49% (adjustable)
- **Reference Voltage Output:** 5.1V (±1%)
- **Error Amplifier Gain Bandwidth:** 3MHz
- **Operating Temperature Range:** 0°C to 70°C
### **Descriptions:**
The SG3525AJ is a high-performance PWM controller designed for switching power supply and DC-DC converter applications. It provides precise voltage regulation and includes features such as soft-start, shutdown control, and adjustable dead-time. The IC operates in push-pull or single-ended configurations and is widely used in power electronics applications.
### **Features:**
- **Adjustable Frequency Oscillator:** Allows setting the switching frequency via external resistor and capacitor.
- **Soft-Start Function:** Gradually increases duty cycle to prevent inrush current.
- **Under-Voltage Lockout (UVLO):** Ensures proper operation only when supply voltage is above 8V.
- **Dual Alternating Outputs:** Supports push-pull or single-ended operation.
- **Sync Capability:** Allows synchronization with an external clock signal.
- **Error Amplifier:** Provides feedback loop control for voltage regulation.
- **Shutdown Pin:** Allows immediate disabling of outputs via an external signal.
- **Low Standby Current:** Typically 8mA when inactive.
This information is based solely on the manufacturer's datasheet and technical documentation.
