OPA547

Features:

· WIDE SUPPLY RANGE Single Supply: +8V to +60V Dual Supply: ±4V to ±30V
· HIGH OUTPUT CURRENT: 500mA Continuous
· WIDE OUTPUT VOLTAGE SWING
· FULLY PROTECTED: Thermal Shutdown Adjustable Current Limit
· OUTPUT DISABLE CONTROL
· THERMAL SHUTDOWN INDICATOR
· HIGH SLEW RATE: 6V/ms
· LOW QUIESCENT CURRENT
· PACKAGES: 7-Lead TO-2207-Lead DDPAK Surface-Mount


Application

· VALVE, ACTUATOR DRIVER
· SYNCHRO, SERVO DRIVER
· POWER SUPPLIES
·TEST EQUIPMENT
· TRANSDUCER EXCITATION
· AUDIO AMPLIFIER


Specifications

Output Current ................................................................. See SOA Curve
Supply Voltage, V+ to V ................................................................... 60V
Input Voltage ..................................................... (V)0.5V to (V+)+0.5V
Input Shutdown Voltage .......................................................................V+
Operating Temperature ................................................. 40 to +125
Storage Temperature ..................................................... 55 to +125
Junction Temperature ...................................................................... 150
Lead Temperature (soldering 10s)⁽²⁾ .............................................. 300
NOTE: (1) Stresses above these ratings may cause permanent damage.
(2) Vapor-phase or IR reflow techniques are recommended for soldering the OPA547F surface mount package. Wave soldering is not recommended due to excessive thermal shock and "shadowing" of nearby devices.


Description

The OPA547 is a low cost, high-voltage/high-current operational amplifier ideal for driving a wide variety of loads. A laser-trimmed monolithic integrated circuit provides excellent low-level signal accuracy and high output voltage and current.

The OPA547 operates from either single or dual supplies for design flexibility. In single supply operation, the input common-mode range extends below ground.

The OPA547 is internally protected against overtemperature conditions and current overloads. In addition, the OPA547 was designed to provide an accurate, user-selected current limit. Unlike other designs which use a "power" resistor in series with the output current path, the OPA547 senses the load indirectly. This allows the current limit to be adjusted from 0 to 750mA with a 0 to 150mA control signal. This is easily done with a resistor/potentiometer or controlled digitally with a voltage-out or current-out DAC.

The Enable/Status (E/S) pin provides two functions.

An input on the pin not only disables the output stage to effectively disconnect the load but also reduces the quiescent to conserve power. The E/S pin output can be monitored to determine if the OPA547 is in thermal shutdown.

The OPA547 is available in an industry-standard 7-lead staggered TO-220 package and a 7-lead DDPAK surface-mount plastic power package. The copper tab allows easy mounting to a heat sink or circuit board for excellent thermal performance. It is specified for operation over the extended industrial temperature range, 40 to +85.