MIC4467BN

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Power Management Integrated Circuits (PMICs) have become increasingly important components in many different types of electronic devices, from mobile phones and laptop computers to embedded systems and automatic industrial controls. In particular, gate drivers are a critical component of PMICs, providing isolated and efficient current switching for MOSFETs and IGBTs. The MIC4467BN is a general-purpose single channel gate driver designed to drive small and medium-sized power MOSFETs and IGBTs.

The MIC4467BN is designed to provide ac/dc switching for small power applications up to 400V. The device has an operating temperature range of -40°C to +85°C and a voltage rating of up to 400V. The MIC4467BN has a logic input voltage range of 1.6V to 18V, making it suitable for applications powered by low-voltage, low-power signals. It features a low quiescent current of less than 2mA and is protected against current and overvoltage transients.

The MIC4467BN features a single, high-performance gate driver circuit, which can drive up to 0.5A of MOSFET/IGBT gate current. It also features an isolation barrier between the logic and power level signal paths and within the gate drivers themselves. The MIC4467BN also offers a high switching frequency of up to 400 kHz, which makes it ideal for use in high-speed switching applications. The MIC4467BN is available in an 8-pin SOIC package and is fully RoHS compliant.

The MIC4467BN can be used in a variety of applications, including motor control, gate drive supplies, inverters, servo control systems, and hit and run controllers. In motor control applications, the MIC4467BN can be used to drive both high and low side MOSFETs and IGBTs, enabling efficient and isolated current switching for high power applications. In inverters and servo control systems, the MIC4467BN can be used to drive MOSFETs and IGBTs operating at high switching frequencies, allowing for more efficient power delivery. In hit and run controllers, the MIC4467BN can be used to drive MOSFETs and IGBTs, allowing for rapid and efficient current switching.

The working principle of the MIC4467BN is based on current drive technology, which is a type of current mirror circuit. In this circuit, a reference current is generated and then replicated across a series of transistors or MOSFETs, enabling efficient and isolated current switching. This reference current is then used to drive the low side MOSFETs connected to the MIC4467BN, while the high side MOSFETs are driven directly from the logic input. The MIC4467BN also features a totem-pole output stage, which provides a level of protection against voltage transients and current overloading.

The MIC4467BN is a general-purpose single-channel gate driver, which provides an efficient and isolated current switching solution for MOSFETs and IGBTs. The device is suitable for a wide range of applications, including motor control, inverters, servo control systems, and hit and run controllers. It operates over a wide voltage range and can achieve high switching frequencies. The MIC4467BN is available in an 8-pin SOIC package and is fully RoHS compliant.

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