OPA549

TO-220 (KV)

11

188 mm² 20.02 x 9.37

TO-OTHER (KVC)

11

90 mm² 20.02 x 4.5

HIGH OUTPUT CURRENT:
8A Continuous
10A Peak
WIDE POWER-SUPPLY RANGE:
Single Supply: +8V to +60V
Dual Supply: ±4V to ±30V
WIDE OUTPUT VOLTAGE SWING
FULLY PROTECTED:
Thermal Shutdown
Adjustable Current Limit
OUTPUT DISABLE CONTROL
THERMAL SHUTDOWN INDICATOR
HIGH SLEW RATE: 9V/µs
CONTROL REFERENCE PIN
11-LEAD POWER PACKAGE
APPLICATIONS
- VALVE, ACTUATOR DRIVER
- SYNCHRO, SERVO DRIVER
- POWER SUPPLIES
- TEST EQUIPMENT
- TRANSDUCER EXCITATION
- AUDIO POWER AMPLIFIER

All trademarks are the property of their respective owners.

HIGH OUTPUT CURRENT:
8A Continuous
10A Peak
WIDE POWER-SUPPLY RANGE:
Single Supply: +8V to +60V
Dual Supply: ±4V to ±30V
WIDE OUTPUT VOLTAGE SWING
FULLY PROTECTED:
Thermal Shutdown
Adjustable Current Limit
OUTPUT DISABLE CONTROL
THERMAL SHUTDOWN INDICATOR
HIGH SLEW RATE: 9V/µs
CONTROL REFERENCE PIN
11-LEAD POWER PACKAGE
APPLICATIONS
- VALVE, ACTUATOR DRIVER
- SYNCHRO, SERVO DRIVER
- POWER SUPPLIES
- TEST EQUIPMENT
- TRANSDUCER EXCITATION
- AUDIO POWER AMPLIFIER

All trademarks are the property of their respective owners.

The OPA549 is a low-cost, high-voltage/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 0A to 10A with a resistor/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 extended industrial temperature range, –40°C to +85°C.

The OPA549 is a low-cost, high-voltage/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 0A to 10A with a resistor/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 extended industrial temperature range, –40°C to +85°C.

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Technical documentation

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	Type	Title	Date
*	Data sheet	High-Voltage, High-Current Operational Amplifier datasheet (Rev. E)	07 Oct 2005
	E-book	The Signal e-book: A compendium of blog posts on op amp design topics	28 Mar 2017
	Application note	MTTF, Failrate, Reliability, and Life Testing	04 Oct 2000
	Application note	DC MOTOR SPEED CONTROLLER: Control a DC Motor without Tachometer Feedback	27 Sep 2000
	Application note	Power Amplifier Stress and Power Handling Limitations	27 Sep 2000

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

OPA549 TINA-TI Reference Design (Rev. B)

SBOC215B.TSC (92 KB) - TINA-TI Reference Design

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OPA549 TINA-TI Spice Model (Rev. A)

SBOM288A.ZIP (5 KB) - TINA-TI Spice Model

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