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. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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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 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
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| General Specification |
| Package/Case |
PDIP-16 |
| Minimum Supply Voltage (V) |
3 |
| Maximum Supply Voltage (V) |
40 |
| Product Type |
Pulse Width Modulator Control Circuit SG3525A |
| Operating Temperature Range (°C) |
–55° C to +125° C |
| Mounting Type |
Through Hole |
| Shipment Weight |
0.005 kg |
| Shipment Dimensions |
3 × 3 × 3 cm |
Please allow 5% measuring deviation due to manual measurement.
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Documentation:
- Datasheet
Package Includes:
1 x 3525 PWM
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