Free delivery on all orders above Rs 999/-
Get 50rs Discount in Your First Order (Coupon code) – NEW50


SG3525 Pulse Width Modulation Controller IC DIP-16 Package

42.00 + GST

Share with Friends

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 on−chip +5.1 V reference is trimmed to 1% and the error amplifier has an input common−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. This device also features built−in soft−start circuitry, requiring only an external timing capacitor. A shutdown pin controls both the soft−start circuitry and the output stages, providing instantaneous turn off through the PWM latch with pulsed shutdown, as well as soft−start recycle with longer shutdown commands. The under voltage lockout inhibits the outputs and the changing of the soft−start capacitor when VCC is below nominal. The output stages are totem−pole design capable of sinking and sourcing in excess of 200 mA. The output stage of the SG3525A features NOR logic resulting in a low output for an off−state.


  • 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 Under voltage Lockout
  • Latching PWM to Prevent Multiple Pulses
  • Pulse−by−Pulse Shutdown
  • Dual Source/Sink Outputs: +-400 mA Peak
  • Pb−Free Packages are Available


Rating Symbol Value Unit
Power Supply Voltage VCC 40 Vdc
Collector Supply Voltage VC 40 Vdc
Logic Inputs −0.3 to +5.5 V
Analog Inputs 40 V
Output Current, Source or Sink IO 40 mA
Reference Output Current Iref 40 mA
Oscillator Charging Current 100 mA
Power Dissipation pd 1.5 mW
Thermal Resistance, Junction−to−Air RJA 1.25 °C/W
Operating Junction Temperature Tj 150 °C
Storage Temperature Range Tstg −65 to +150 °C

* product image for illustration purposes only. actual product may vary.


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

You may also like…