Datasheet

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LM675

www.ti.com

SNOSBP3E –MAY 1999–REVISED MARCH 2013

LM675 Power Operational Amplifier

Check for Samples: LM675

FEATURES

Connection Diagram

• 3A Current Capability

• A

Typically 90 dB

• 5.5 MHz Gain Bandwidth Product

• 8 V/μs Slew Rate

• Wide Power Bandwidth 70 kHz

• 1 mV Typical Offset Voltage

*The tab is internally connected to pin 3

• Short Circuit Protection

(−V

)

• Thermal Protection with Parole Circuit (100%

Figure 1. Front View

Tested)

TO-220 Power Package (NDH)

See Package Number NDH0005D

• 16V–60V Supply Range

• Wide Common Mode Range

• Internal Output Protection Diodes

Typical Applications

• 90 dB Ripple Rejection

• Plastic Power Package TO-220

APPLICATIONS

• High Performance Power Op Amp

• Bridge Amplifiers

• Motor Speed Controls

• Servo Amplifiers

• Instrument Systems

DESCRIPTION

The LM675 is a monolithic power operational

amplifier featuring wide bandwidth and low input

offset voltage, making it equally suitable for AC and

DC applications.

The LM675 is capable of delivering output currents in

excess of 3 amps, operating at supply voltages of up

to 60V. The device overload protection consists of

both internal current limiting and thermal shutdown.

Figure 2. Non-Inverting Amplifier

The amplifier is also internally compensated for gains

of 10 or greater.

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.

2All trademarks are the property of their respective owners.

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.

Summary of content (15 pages)

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LM675 www.ti.com SNOSBP3E – MAY 1999 – REVISED MARCH 2013 LM675 Power Operational Amplifier Check for Samples: LM675 FEATURES 1 • • • • • • • • 2 • • • • • 3A Current Capability AVO Typically 90 dB 5.
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LM675 SNOSBP3E – MAY 1999 – REVISED MARCH 2013 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
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LM675 www.ti.com SNOSBP3E – MAY 1999 – REVISED MARCH 2013 TYPICAL APPLICATIONS VS = ±8V → ±30V Figure 3.
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LM675 SNOSBP3E – MAY 1999 – REVISED MARCH 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS THD vs Power Output Input Common Mode Range vs Supply Voltage Figure 4. Figure 5. Supply Current vs Supply Voltage PSRR vs Frequency Figure 6. Figure 7. Device Dissipation vs Ambient Temperature† Current Limit vs Output Voltage* †θ INTERFACE = 1° C/W See APPLICATION HINTS. *VS = ±25V Figure 8. 4 Figure 9.
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LM675 www.ti.com SNOSBP3E – MAY 1999 – REVISED MARCH 2013 TYPICAL PERFORMANCE CHARACTERISTICS (continued) IB vs Supply Voltage Output Voltage Swing vs Supply Voltage Figure 10. Figure 11.
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LM675 SNOSBP3E – MAY 1999 – REVISED MARCH 2013 www.ti.
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LM675 www.ti.com SNOSBP3E – MAY 1999 – REVISED MARCH 2013 APPLICATION HINTS STABILITY The LM675 is designed to be stable when operated at a closed-loop gain of 10 or greater, but, as with any other high-current amplifier, the LM675 can be made to oscillate under certain conditions. These usually involve printed circuit board layout or output/input coupling.
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LM675 SNOSBP3E – MAY 1999 – REVISED MARCH 2013 www.ti.com POWER DISSIPATION AND HEAT SINKING The LM675 should always be operated with a heat sink, even though at idle worst case power dissipation will be only 1.8W (30 mA × 60V) which corresponds to a rise in die temperature of 97°C above ambient assuming θjA = 54°C/W for a TO-220 package. This in itself will not cause the thermal protection circuitry to shut down the amplifier when operating at room temperature, but a mere 0.
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LM675 www.ti.com SNOSBP3E – MAY 1999 – REVISED MARCH 2013 Typical Applications Figure 12. Non-Inverting Unity Gain Operation Figure 13.
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LM675 SNOSBP3E – MAY 1999 – REVISED MARCH 2013 www.ti.com Figure 14. Servo Motor Control IOUT = VIN × 2.5 amps/volt i.e. IOUT = 1A when VIN = 400 mV Trim pot for max ROUT Figure 15.
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LM675 www.ti.com SNOSBP3E – MAY 1999 – REVISED MARCH 2013 REVISION HISTORY Changes from Revision D (March 2013) to Revision E • Page Changed layout of National Data Sheet to TI format ..........................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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MECHANICAL DATA NDH0005D www.ti.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.