Texas Instruments DRV591

3-A HIGH-EFFICIENCY PWM POWER DRIVER

the drv591 is a high-efficiency high-current power amplifier ideal for driving a wide variety of thermoelectric cooler elements in systems powered from 2.8 v to 5.5 v. pwm operation and low output stage on-resistance significantly decrease power dissipation in the amplifier. the drv591 is internally protected against thermal and current overloads. logic-level fault indicators signal when the junction temperature has reached approximately 130c to allow for system-level shutdown before the amplifiers internal thermal shutdown circuitry activates. the fault indicators also signal when an over-current event has occurred. if the over-current circuitry is tripped the drv591 automatically resets (see application information section for more details). view all in datasheet