Quad high-side N-channel driver — what it is and where it fits
The Maxim Integrated MAX620CWN+ is a quad high-side N-channel MOSFET gate driver in an 18-SOIC package. It drives four independent high-side N-channel MOSFETs with non-inverting inputs, operating from a 4.5 V to 16.5 V supply. Typical rise and fall times are 1.7 µs and 2.5 µs respectively, with logic thresholds at 0.8 V (VIL) and 2.4 V (VIH). This part is suited for applications requiring isolated high-side switching — such as solenoid drivers, relay replacements, motor pre-drive stages, and power distribution switches in industrial control, telecom line cards, and office equipment. The commercial temperature range (0°C to 70°C) limits it to controlled indoor environments; it is not rated for automotive or extended industrial ambient use.
18-SOIC package and rework considerations
The 18-SOIC wide-body (7.50 mm width) package is surface-mount with a 0.295-inch body width. The gull-wing leads are accessible for inspection and hand rework with a hot-air station — no hidden pads or thermal slug underneath. The wide lead pitch reduces the risk of bridging during reflow or touch-up. As with any SOIC, ensure the board is dry (MSL level per the reel label) before reflow to avoid popcorning.
Lifecycle and sourcing posture
The MAX620CWN+ carries an Active product status with ROHS3 compliance. No official second-source or direct replacement is listed in the available records.