San Jose, CA--January 21, 1997--Micrel Semiconductor Inc. (San Jose, CA) introduced the MIC5031 high-side MOSFET driver. The new device is intended for use in fast power switching applications, circuit-breaker applications, and pulse-width modulated automotive illumination or electric motor control.
The MIC5031 high-side driver operates in circuits from +4.5V to +30V, and is designed to switch an N-channel, enhancement-type MOSFET from a TTL-compatible control signal. An internal charge pump allows the driver to sustain a gate-voltage output higher than the supply voltage. MIC5031 gate drive is fast, with a 70ns rise time and a 50ns fall time into a 1000pF load from a +5V power supply. The new driver operates in PWM applications up to 30kHz at 0 percent to 100 percent duty cycle.
A resistor-programmable overcurrent shutdown feature in the MIC5031 monitors current through the external MOSFET. A capacitor-programmable delay avoids unwanted shutdown when switching a high inrush current load. An open-load detection feature is also included on the chip along with an open-collector fault flag output which signals overcurrent, overtemperature, or open-load conditions.
The MIC5031 high-speed high-side driver is available in 16-lead narrow SOIC packages and is supplied in a -40 degrees C to + 85 degrees C operating temperature grade. Parts are available from stock. The price for 1000+ quantities for the MIC5031 is $1.37.
Micrel Resource Center
1849 Fortune Dr.
San Jose, CA 95131
Fax: (408) 944-0970
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