The SG3525A pulse width modulator control circuit offers improved performance and lower external parts count when implemented for controlling all types of switching power supplies. The onˆ‚¬„¢chip +5.1 V reference is trimmed to ±1% and the error amplifier has an input commonˆ‚¬„¢mode voltage range that includes the reference voltage, thus eliminating the need for external divider resistors. A sync input to the oscillator enables multiple units to be slaved or a single unit to be synchronized to an external system clock. A wide range of deadtime can be programmed by a single resistor connected between the CT and Discharge pins.
Features
- 8.0 V to 35 V Operation
- 5.1 V± 1.0% Trimmed Reference
- 100 Hz to 400 kHz Oscillator Range
- Separate Oscillator Sync Pin
- Adjustable Deadtime Control
- Input Undervoltage Lockout
- Latching PWM to Prevent Multiple Pulses
- Pulseˆ‚¬„¢byˆ‚¬„¢Pulse Shutdown
- Dual Source/Sink Outputs: ±400 mA Peak
Specification
| Model | SG3525A |
| Brand | ONSEMI |
| Type | Pulse Width Modulator Control IC |
| Package Style | SMD |
| Supply Voltage | 40V |
| Output Current | ±500mA |
| Power Dissipation | 1000mW |
| Operating Junction Temperature | 150°C |
| Storage Temperature Range | ˆ‚¬„¢55°C to +125°C |
FAQs
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