UC3525B

• Product Introduction

The integrated circuit UC1525B/1527B series of pulse width modulators are designed to provide higher performance and reduce the number of external components used in all types of switching power supplies when designed. The on-chip 5.1 V reference Zener trimmed to ± 0.75% and the input common-mode error amplifier range includes a reference voltage without the need for an external resistor. Synchronous input to oscillator allows multiple units to be synchronized to an external system clock in a slave or one unit. The CT and a resistive discharge terminal between provide a dead zone time adjustment range. The devices also have built-in soft-start with only one external timing circuit capacitance requirement.