MICROCHIP MIC2039BYM6-T5

The MIC2039 is a high-side MOSFET power distribution switch that provides increased system reliability by using 5% current-limit accuracy. The MIC2039 has an operating input voltage range from 2.5V to 5.5V, is internally current-limited, and has thermal shutdown to protect the device and system. The MIC2039 is offered with either active-high or active-low logic level enable input controls. It has an open drain fault status output flag with a built-in 32 ms delay that asserts low during overcurrent or thermal-shutdown conditions. The MIC2039 features an adjustable output current limit that is resistor-programmable from 0.2A to 2.5A. The MIC2039 also offers a unique, kickstart feature that allows momentary high-current surges up to the secondary current limit (ILIMIT_2nd) during startup or while operating in steady-state. This is useful for charging loads with high inrush currents, such as capacitors. After an overcurrent condition is established, these switches enter into a constant current-limit mode unless the die temperature exceeds the thermal-shutdown specification. The MIC2039 is available in 6-pin SOT-23 and 6-pin 2mm×2mm thin DFN packages. The MIC2039 has an operating junction temperature range of -40°C to +125°C.

• ±5% Current-Limit Accuracy
• Input Supply Range from 2.5V to 5.5V
• Low Quiescent Current: 100µA Typical (Switch ON)
• 75mΩ Typical RDS(ON) at 5V
• 0.2A to 2.5A Adjustable Output Current
• Kickstart: Momentary Secondary Current-Limit Threshold (120 ms period)
• Soft-Start Functionality
• Undervoltage Lockout (UVLO)
• Fast 10 µs Short-Circuit Response Time (Non-Kickstart Options)
• Fault Status Output Flag
• Logic Controlled Enable (Active-High, Active-Low)
• Thermal Shutdown
• Pin Compatible with MIC2009/MIC2019
• 6-Pin 2mm×2mm Thin DFN and 6-Pin SOT-23 Packages
• Junction Temperature Range from -40°C to +125°C

• USB Peripherals and USB 2.0/3.0-Compatible
• DTV/STB
• Notebooks and Consumer Electronics
• General Purpose Power Distribution