Texas Instruments UCC2804 Low-Power BiCMOS Current-Mode PWM UCC2804N

The UCC2804 is a low-power BiCMOS current-mode PWM controller designed for use in switching mode power supplies and DC-to-DC converters. It operates with a typical starting supply current of 100OºA and a typical operating supply current of 500OºA, allowing for efficient power management. The device supports operation up to 1MHz and features internal soft start and fault soft start capabilities, which enhance system reliability during startup conditions. The UCC2804 includes internal leading-edge blanking of the current sense signal, which helps to improve performance by reducing noise sensitivity. It provides a 1A totem-pole output with a typical response time of 70ns from current-sense to gate drive output. The voltage reference tolerance is specified at 1.5%, ensuring stable operation across varying conditions. This controller is suitable for applications in automotive power supply units and battery-operated systems, with a maximum duty cycle of 50% and a reference voltage of 5V. The UCC2804 is rated for operation in a temperature range of -40¬8C to 125¬8C, making it versatile for various environmental conditions. The device is available in multiple package options, including SOIC and TSSOP, facilitating integration into different designs.