KA3525A - Fairchild

KA3525A SMPS CONTROLLER

The KA3525A is a monolithic integrated circuit that includes all of the control circuits necessary for a pulse width modulating regulator. There are a voltage reference, an error amplifier, a pulse width modulator, an oscillator, an under voltage lockout, a soft start circuit, and the output driver in the chip. 16-DIP Internal Block Diagram 1 VREF 16 VCC .

Features

• 5V ±1% Reference
• Oscillator Sync Terminal
• Internal Soft Start
• Deadtime Control
• Under Voltage Lockout Description The KA3525A is a monolithic integrated circuit that includes all of the control circuits necessary for a pulse width modulating regulator. There are a voltage reference, an error amplifier, a pulse width modulator, an oscillator, an under voltage lockout, a soft start circuit, and the output driver in the chip. 16-DIP Internal Block Diagram 1 VREF 16 VCC 15 GND 12 BAND GAP REF 5V U.V.L.O. EA(-) 1 EA(+) 2 EAOUT 9 _ ERR AMP + C8 (SOFT START) 5K 10 SHUT DOWN CT 5 7 .