OPA547

OPA547

High-Voltage, High-Current

OPERATIONAL AMPLIFIER

DESCRIPTION

The OPA547 is a low cost, high-voltage/high-current opera-

tional amplifier ideal for driving a wide variety of loads. A

laser-trimmed monolithic integrated circuit provides excel-

lent 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 over-tempera-

ture 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 150

µA control signal.

This is easily done with a resistor/potentiometer or con-

trolled 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 quies-

cent to conserve power. The E/S pin output can be moni-

tored 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

°C to +85°C.

FEATURES

q WIDE SUPPLY RANGE

Single Supply: +8V to +60V

Dual Supply:

q HIGH OUTPUT CURRENT:

500mA Continuous

q WIDE OUTPUT VOLTAGE SWING

q FULLY PROTECTED:

Thermal Shutdown

Adjustable Current Limit

q OUTPUT DISABLE CONTROL

q THERMAL SHUTDOWN INDICATOR

q HIGH SLEW RATE: 6V/

µs

q LOW QUIESCENT CURRENT

q PACKAGES:

7-Lead TO-220

7-Lead DDPAK Surface-Mount

APPLICATIONS

q VALVE, ACTUATOR DRIVER

q SYNCHRO, SERVO DRIVER

q POWER SUPPLIES

q TEST EQUIPMENT

q TRANSDUCER EXCITATION

q AUDIO AMPLIFIER

OPA547

V

IN

–

V

IN

+

V+

E/S

R

CL

R

value from 0 to 750mA.

(0.25W

Signal Resistor)

I

LIM

V

O

V–

OPA547

SBOS056A – JANUARY 2002

www.ti.com

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright © 1997, Texas Instruments Incorporated

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.