MC33091A Datasheet | Motorola Semiconductor

Order this document by MC33091A/D High-Side TMOS Driver The MC33091A is a High- Side TMOS Driver designed for use in harsh automotive switching applications requiring the capability of handling high voltages attributed to load and field dump transients, as well as reverse and double battery conditions. Few external ponents are required to drive a wide variety of N- Channel TMOS devices. The MC33091A, driving an appropriate TMOS device, offers economical system solutions for high- side switching large currents. The MC33091A has CMOS patible input control, charge pump to drive the TMOS power transistor, basic fault detection circuit, VDS monitoring circuit used to detect a shorted TMOS load, and overcurrent protection timer with associated current squaring circuitry. Short circuit protection is made possible by having a unique VDS voltage to current converter drive an externally programmable integrator circuit. This circuit affords fast detection of a shorted load while allowing difficult loads, such as lamps having high in- rush currents, additional time to turn on. The Fault output is prised of an open collector NPN transistor requiring a single pull- up resistor for operation. A fault is reported whenever the MOSFET on- current exceeds an externally programmed set level. The MC33091A is available in the plastic 8- Pin DIP package as well as the plastic 8- Pin surface mount package. - Designed for Automotive High- Side Driver Applications HIGH- SIDE TMOS DRIVER SEMICONDUCTOR TECHNICAL DATA 8 1 P SUFFIX PLASTIC PACKAGE CASE 626 - - - - - - - - - Works with a Wide Variety of N- Channel Power MOSFETs Drives Inductive Loads with No External Clamp Circuitry Required CMOS Logic patible Input Control On- Board Charge Pump with No External ponents Required Shorted Load Detection and Protection Forward Overvoltage and Reverse Battery Protection Load and Field Dump Protection Extended Operating Temperature Range Fault Output to Report a MOSFET Overcurrent...