OPA549-HIREL Datasheet, PDF (1/23 Pages) Texas Instruments – HIGH-VOLTAGE, HIGH-CURRENT OPERATIONAL AMPLIFIER

OPA549-HiRel
www.ti.com
SLOS744 – MAY 2012
HIGH-VOLTAGE, HIGH-CURRENT OPERATIONAL AMPLIFIER
Check for Samples: OPA549-HiRel
FEATURES
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• 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
V+
OPA549
Ref
I_LIM
R_CL
V_O
R_CL sets the current limit
value from 0A to 10A.
(Very Low Power Dissipation)
ES Pin
E/S
Forced Low: Output disabled.
Indicates Low: Thermal shutdown.
V–
(1) Additional temperature ranges available - contact factory
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.
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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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated