U3525A IC PWM controller UTC DIP-16 U3525A

Product Overview: The U3525A is a pulse-width modulator (PWM) control circuit designed by Unisonic Technologies (UTC) to improve performance and reduce the external component count in switching power supply designs. It features an internally trimmed 5.1V reference, an error amplifier with a common-mode input range that includes the reference voltage, and a dedicated synchronization input for external clocking. The device incorporates built-in soft-start, programmable deadtime, and an under-voltage lockout to ensure robust operation. Its output stage utilizes a totem-pole design capable of sourcing or sinking over 200 mA, using NOR logic to ensure a low state when the device is off.

Core Specifications:

• Manufacturer: Unisonic Technologies (UTC)