MIC5021BN

Overview

The MIC5021BN is a high-speed, high-side MOSFET driver manufactured by Microchip Technology. It operates within a supply voltage range of 12V to 36V and supports frequencies up to 100kHz. The device features an internal charge pump and overcurrent limit protection. It provides rise and fall times of 550ns when driving a 2000pF load. The input is TTL compatible with an internal pull-down resistor. It is housed in an 8-pin DIP package.

Feature Summary

• High-speed operation suitable for motor control and switch-mode power supplies
• Internal charge pump ensures reliable high-side gate drive
• Integrated overcurrent limit protection for circuit breaker functionality
• TTL-compatible input interface with internal pull-down resistor

Applications

• Motor control systems
• Switch-mode power supplies (SMPS)
• IGBT switching applications
• Lamp and heater control
• Solenoid switching circuits

Procurement Notes

Verify the specific suffix 'BN' corresponds to the PDIP-8 package variant in official datasheets. Confirm RoHS compliance status as historical Micrel data may differ from current Microchip specifications. Check for lead-free marking on the component body. Ensure the source document explicitly lists MIC5021BN rather than generic family members.

Selection Notes

Select this component for applications requiring high-side MOSFET or IGBT driving at frequencies up to 100kHz. The internal charge pump eliminates the need for external bootstrap components. Consider the overcurrent limit feature if circuit breaker behavior is required. Verify that the 12V to 36V operating range matches the system supply voltage.

Part Context

The MIC5021 series includes variants such as MIC5021BM and MIC5021YM. The MIC5021BN specifically denotes the plastic dual in-line package version. Microchip acquired Micrel, which originally developed this driver. The part is designed for high-speed switching applications where low EMI and fast response are critical.

Replacement Considerations

• MIC5021YM
• MIC5021BM

FAQ

What is the maximum operating frequency of the MIC5021BN?

The MIC5021BN is guaranteed to operate at frequencies up to 100kHz over the full temperature and operating voltage range.

Does the MIC5021BN require external components for high-side driving?

No, the MIC5021BN includes an internal charge pump, eliminating the need for external bootstrap capacitors for high-side gate drive.

How does the MIC5021BN handle overcurrent conditions?

The device features integrated overcurrent limit protection, allowing it to function as a circuit breaker with or without automatic retry capabilities.