1FEATURES

• High Output Current:

– 8-A Continuous

– 10-A Peak

• Wide Power Supply Range:

– Single Supply: 8 V to 60 V

– Dual Supply: ±4 V to ±30 V

• Wide Output Voltage Swing

• Fully Protected:

– Thermal Shutdown

– Adjustable Current

• Output Disable Control

• Thermal Shutdown Indicator

• High Slew Rate: 9 V/μs

• Control Reference Pin

• 11-Lead Power Package

APPLICATIONS

• Valve, Actuator Drivers

• Synchro, Servo Drivers

• Power Supplies

• Test Equipment

• Transducer Excitation

• Audio Power Amplifiers

SUPPORTS DEFENSE, AEROSPACE,

AND MEDICAL APPLICATIONS

• Controlled Baseline

• One Assembly/Test Site

• One Fabrication Site

• Available in Military (–55°C/125°C),

Temperature Range(1)

• Extended Product Life Cycle

• Extended Product-Change Notification

• Product Traceability

DESCRIPTION

The OPA549 is a low-cost, high-voltage and high-current operational amplifier ideal for driving a wide variety of

loads. This laser-trimmed monolithic integrated circuit provides excellent low-level signal accuracy and high

output voltage and current.

The OPA549 operates from either single or dual supplies for design flexibility. The input common-mode range

extends below the negative supply.

The OPA549 is internally protected against over-temperature conditions and current overloads. In addition, the

OPA549 provides an accurate, user-selected current limit. Unlike other designs which use a power resistor in

series with the output current path, the OPA549 senses the load indirectly. This allows the current limit to be

adjusted from 0 A to 10 A with a resistor or potentiometer, or controlled digitally with a voltage-out or current-out

digital-to-analog converter (DAC).

The enable/status (E/S) pin provides two functions. It can be monitored to determine if the device is in thermal

shutdown, and it can be forced low to disable the output stage and effectively disconnect the load.

The OPA549 is available in an 11-lead power package. Its copper tab allows easy mounting to a heat sink for

excellent thermal performance. Operation is specified over the temperature range of −55°C to 125°C.