®
OPA541
High Power Monolithic
OPERATIONAL AMPLIFIER
FEATURES
q
POWER SUPPLIES TO
±
40V
q
OUTPUT CURRENT TO 10A PEAK
q
PROGRAMMABLE CURRENT LIMIT
q
INDUSTRY-STANDARD PIN OUT
q
FET INPUT
q
TO-3 AND LOW-COST POWER PLASTIC
PACKAGES
APPLICATIONS
q
MOTOR DRIVER
q
SERVO AMPLIFIER
q
SYNCHRO EXCITATION
q
AUDIO AMPLIFIER
q
PROGRAMMABLE POWER SUPPLY
DESCRIPTION
The OPA541 is a power operational amplifier capable
of operation from power supplies up to
±40V
and
delivering continuous output currents up to 5A. Inter-
nal current limit circuitry can be user-programmed
with a single external resistor, protecting the amplifier
and load from fault conditions. The OPA541 is fabri-
cated using a proprietary bipolar/FET process.
Pinout is compatible with popular hybrid power am-
plifiers such as the OPA511, OPA512 and the 3573.
The OPA541 uses a single current-limit resistor to set
both the positive and negative current limits. Applica-
tions currently using hybrid power amplifiers requir-
ing two current-limit resistors need not be modified.
The OPA541 is available in an 11-pin power plastic
package and an industry-standard 8-pin TO-3 her-
metic package. The power plastic package has a cop-
per-lead frame to maximize heat transfer. The TO-3
package is isolated from all circuitry, allowing it to be
mounted directly to a heat sink without special insula-
tors.
+V
S
–In
+In
Current
Sense
R
CL
Output
Drive
External
V
O
–V
S
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
®
PDS-737H
1
OPA541