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OPA549 Datasheet

  • OPA549

  • High-Voltage. High-Current Op Amp. Excellent Output Swing

  • 17頁

  • ETC

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OPA549
OPA
549
OPA
549
SBOS093C 鈥?MARCH 1999 鈥?REVISED SEPTEMBER 2002
High-Voltage, High-Current
OPERATIONAL AMPLIFIER
FEATURES
q
HIGH OUTPUT CURRENT:
8A Continuous
10A Peak
q
WIDE POWER-SUPPLY RANGE:
Single Supply: +8V to +60V
Dual Supply:
鹵
4V to
鹵
30V
q
WIDE OUTPUT VOLTAGE SWING
q
FULLY PROTECTED:
Thermal Shutdown
Adjustable Current Limit
q
q
q
q
q
OUTPUT DISABLE CONTROL
THERMAL SHUTDOWN INDICATOR
HIGH SLEW RATE: 9V/碌s
CONTROL REFERENCE PIN
11-LEAD POWER PACKAGE
DESCRIPTION
The OPA549 is a low-cost, high-voltage/high-current opera-
tional 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 鈥減ower鈥?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 ex-
tended industrial temperature range, 鈥?0擄C to +85擄C.
V+
APPLICATIONS
q
q
q
q
q
q
VALVE, ACTUATOR DRIVER
SYNCHRO, SERVO DRIVER
POWER SUPPLIES
TEST EQUIPMENT
TRANSDUCER EXCITATION
AUDIO POWER AMPLIFIER
OPA549
I
LIM
Ref
R
CL
ES Pin
E/S
Forced Low: Output disabled.
Indicates Low: Thermal shutdown.
V鈥?/div>
V
O
R
CL
sets the current limit
value from 0A to 10A.
(Very Low Power Dissipation)
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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright 漏 1999, Texas Instruments Incorporated
www.ti.com

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