www.fairchildsemi.com
UC3525A
SMPS Controller
Features
•
•
•
•
•
5V
±
1% Reference
Oscillator Sync terminal
Internal Soft Start
Deadtime Control
Under-Voltage Lockout
Description
UC3525A is a monolithic integrated circuit that Included
all of the control circuit necessary for a pulse width modulat-
ing regulator. There are a voltage reference, an error ampli-
fier, a pulse width modulator, an oscillator, under-voltage
lockout, soft start circuit, and output drivers in the chip.
16-DIP
1
Internal Block Diagram
Rev. 5.0
©2000 Fairchild Semiconductor International