Microchip Technology, Inc. DC DC Switching Controllers MIC3809YMM

The MIC3809YMM is a push-pull PWM control IC designed for high efficiency in isolated step-down DC-DC conversion applications, particularly in telecom environments with input voltages ranging from 36V to 75V. It features a dual output drive stage capable of delivering 500mA peak source and 1A peak sink current, which enhances transformer utilization and reduces overall size. The device operates with a low start-up current of 130¬µA and a run current of 1mA, making it suitable for applications requiring high efficiency even at light loads. The MIC3809YMM has an adjustable dead-time between outputs, ranging from 60ns to 200ns, which helps minimize input and output ripple and reduces stress on external components. It supports operation frequencies up to 1MHz, facilitated by a high-speed internal error amplifier with a gain bandwidth of 4MHz. The part has a turn-on threshold of 4.3V and is available in both SOP-8 and MSOP-8 packages, with an operating temperature range of -40¬8C to +85¬8C. This product is ideal for various applications, including telecom equipment, networking power supplies, and industrial power supplies.