MIC3808YM-TR

The MIC3808YM-TR from Microchip Technology is a complementary output push-pull PWM controller IC. It is designed for high-speed and low-power consumption, making it suitable for telecom-level isolated step-down DC/DC conversion applications requiring high output current, small size, and high efficiency.

The dual-ended push-pull architecture enhances transformer utilization and allows for smaller DC/DC solutions. The out-of-phase topology supports a higher effective duty cycle, reducing input and output ripple and stress on external components. The dead-time between outputs is adjustable from 60ns to 200ns, limiting each output stage's duty cycle to less than 50%.

Built on a low-power, high-speed BiCMOS process, this controller features a typical start-up current of 130 µA and a run current of 1 mA. The internal 4MHz error amplifier enables operation up to 1MHz. The MIC3808 has a turn-on threshold of 12.5V. The device is available in an 8-SOIC package with an operating temperature range of -40°C to +85°C.

Key electrical characteristics include operation up to 1MHz, a typical start-up current of 130 µA, and a typical run current of 1 mA. The output drive stages can handle 500mA peak source current and 1A peak sink current. The device is surface-mounted in an 8-SOIC package.