UCC3805DTR/81222G4

低功耗BiCMOS电流模式PWM Low-Power BiCMOS Current-Mode PWM

DESCRIPON

The UCC1800/1/2/3/4/5 family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching power supplies with minimal parts count.

FEATURES

•100µA Typical Starting Supply Current

•500µA Typical Operating Supply Current

•Operation to 1MHz

•Internal Soft Start

•Internal Fault Soft Start

•Internal Leading-Edge Blanking of the Current Sense Signal

•1 Amp Totem-Pole Output

•70ns Typical Response from Current-Sense to Gate Drive Output

•1.5% Tolerance Voltage Reference

•Same Pinout as UC3842 and UC3842A