OPA548 Datasheet, PDF (1/16 Pages) Burr-Brown (TI) – High-Voltage, High-Current OPERATIONAL AMPLIFIER

®
OPA548
OPA548
OPA548
www.burr-brown.com/databook/OPA548.html
High-Voltage, High-Current
OPERATIONAL AMPLIFIER
FEATURES
q WIDE SUPPLY RANGE
Single Supply: +8V to +60V
Dual Supply: ±4V to ±30V
q HIGH OUTPUT CURRENT:
3A Continuous
5A Peak
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: 10V/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
DESCRIPTION
The OPA548 is a low cost, high-voltage/high-current
operational amplifier ideal for driving a wide variety
of loads. A laser-trimmed monolithic integrated cir-
cuit provides excellent low-level signal accuracy and
high output voltage and current.
The OPA548 operates from either single or dual sup-
plies for design flexibility. In single supply operation,
the input common-mode range extends below ground.
The OPA548 is internally protected against over-
temperature conditions and current overloads. In addi-
tion, the OPA548 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 OPA548 senses the load indirectly. This
allows the current limit to be adjusted from 0 to 5A
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 current to conserve power. The E/S pin
output can be monitored to determine if the OPA548
is in thermal shutdown.
The OPA548 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. A SPICE macromodel is
V+ available for design analysis.
V_I–N
OPA548
V_O
V_I+N
I_LIM
R_CL ^{(1/4W Resistor)}
E/S
V–
R_CL sets the current limit
value from 0 to 5A.
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©1997 Burr-Brown Corporation
PDS-11389B
®
OPA548 Printed in U.S.A. October, 1997