Texas Instruments UCC2813-4 Low Power Economy BiCMOS Current Mode PWM UCC2813D-4

The UCC2813-4 is a low-power BiCMOS current mode PWM controller designed for use in switch mode power supplies and DC-DC converters. It features a typical starting supply current of 100¬µA and an operating supply current of 500¬µA, allowing for efficient power management. The device operates at frequencies up to 1MHz and includes internal soft start and fault soft start capabilities, which help to minimize inrush current during startup. The UCC2813-4 has a totem-pole output capable of driving up to 1A, with a typical response time of 70ns from the current-sense input to the gate-drive output. It also offers a 1.5% tolerance voltage reference, making it suitable for precision applications. The device is specified for operation over a temperature range of -40¬8C to 85¬8C and is available in multiple package options, including SOIC and TSSOP. This part is particularly well-suited for applications requiring a compact design with minimal external components, such as industrial power supplies and battery-operated systems. The UCC2813-4 shares pin compatibility with other devices in the UCC3802 and UC3842 families, facilitating design transitions.