Datasheet

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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. Internal current limit

circuitry can be user-programmed with a single external

resistor, protecting the amplifier and load from fault condi-

tions. The OPA541 is fabricated using a proprietary bipolar/

FET process.

Pinout is compatible with popular hybrid power amplifiers

such as the OPA511, OPA512 and the 3573. The OPA541

uses a single current-limit resistor to set both the positive and

High Power Monolithic

OPERATIONAL AMPLIFIER

APPLICATIONS

● MOTOR DRIVER

● SERVO AMPLIFIER

● SYNCHRO EXCITATION

● AUDIO AMPLIFIER

● PROGRAMMABLE POWER SUPPLY

FEATURES

● POWER SUPPLIES TO ±40V

● OUTPUT CURRENT TO 10A PEAK

● PROGRAMMABLE CURRENT LIMIT

● INDUSTRY-STANDARD PIN OUT

● FET INPUT

● TO-3 AND LOW-COST POWER PLASTIC

PACKAGES

negative current limits. Applications currently using hybrid

power amplifiers requiring 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 hermetic package. The

power plastic package has a copper-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 insulators.

Current

Sense

Output

Drive

+In

–In

External

–V

OPA541

SBOS153A – SEPTEMBER 2000 – AUGUST 2006

www.ti.com

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.

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.

All trademarks are the property of their respective owners.

Summary of content (14 pages)

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OPA541 SBOS153A – SEPTEMBER 2000 – AUGUST 2006 High Power Monolithic OPERATIONAL AMPLIFIER FEATURES ● ● ● ● ● ● APPLICATIONS POWER SUPPLIES TO ±40V OUTPUT CURRENT TO 10A PEAK PROGRAMMABLE CURRENT LIMIT INDUSTRY-STANDARD PIN OUT FET INPUT TO-3 AND LOW-COST POWER PLASTIC PACKAGES ● ● ● ● ● 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.
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ABSOLUTE MAXIMUM RATINGS(1) Supply Voltage, +VS to –VS ............................................................... 80V Output Current ............................................................................. see SOA Power Dissipation, Internal(2) .......................................................... 125W Input Voltage: Differential .................................................................... ±VS Common-mode ............................................................
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ELECTRICAL CHARACTERISTICS At TC= +25°C and VS = ±35VDC, unless otherwise noted. OPA541AM/AP PARAMETER INPUT OFFSET VOLTAGE VOS vs Temperature vs Supply Voltage vs Power CONDITIONS MIN Specified Temperature Range VS = ±10V to ±VMAX INPUT BIAS CURRENT IB INPUT OFFSET CURRENT IOS MAX TYP MAX UNITS ±2 ±20 ±2.5 ±20 ±10 ±40 ±10 ±60 ±0.
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TYPICAL CHARACTERISTICS At TA = +25°C, VS = ±35VDC, unless otherwise noted. INPUT BIAS CURRENT vs TEMPERATURE OPEN-LOOP GAIN AND PHASE vs FREQUENCY 100 Voltage Gain (dB) Input Bias Current (nA) 0 –45 –90 –135 –180 90 10 1 0.1 0.01 Z L = 2k Ω Phase 70 Z L = 3.3nF 50 Gain 30 Z L = 2k Ω 10 Z L = 3.3nF 0.001 –25 –10 0 25 50 75 100 1 125 10 100 NORMALIZED QUIESCENT CURRENT vs TOTAL POWER SUPPLY VOLTAGE 5 1.1 |±VS | – |VOUT | (V) Normalized IQ 100k 1M 10M 6 1.
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TYPICAL CHARACTERISTICS (Cont) At TA = +25°C, VS = ±35VDC, unless otherwise noted. CURRENT LIMIT vs RESISTANCE LIMIT vs TEMPERATURE CURRENT LIMIT vs RESISTANCE LIMIT 10 10 Power Plastic Power Plastic at –25°C Power Plastic at +85°C TO-3 ILIMIT (A) ILIMIT (A) TO-3 at –25°C TO-3 at +85°C 1 1 NOTE: These are averaged values. –I OUT is typically 10% higher. +I OUT is typically 10% lower. NOTE: These are averaged values. –I OUT is typically 10% higher. +I OUT is typically 10% lower. 0.1 0.01 0.
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INSTALLATION INSTRUCTIONS POWER SUPPLIES The OPA541 is specified for operation from power supplies up to ±40V. It can also be operated from unbalanced power supplies or a single power supply, as long as the total power supply voltage does not exceed 80V. The power supplies should be bypassed with low series impedance capacitors such as ceramic or tantalum. These should be located as near as practical to the amplifier’s power supply pins.
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APPLICATIONS CIRCUITS SAFE OPERATING AREA 10 +VS TC = +25°C TC = +85°C 10µF |IO | (A) 0.1µF TC = +125°C “M” Package only 1 D1 OPA541 AP, AM BM, SM D2 Inductive or EMF-Generating Load L 0.1 1 10 100 10µF 0.1µF |V S – VOUT | (V) D1 – D2 : IN4003 –VS FIGURE 1. Safe Operating Area. across the output transistor decreases and the device can safely provide large output currents demanded by the load. FIGURE 2. Clamping Output for EMF-Generating Loads.
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+60V +35V 0.1µF 0.1µF R2 10kΩ 25kΩ 0–2mA 30pF DAC80-CBI-I VO OPA541 VO OPA541 0.5Ω VIN * 0.3Ω 0–50V 0.1µF R1 2.5kΩ A V = 1 + R 2 /R 1 = 5 –35V 0.1µF * Protects DAC During Slewing FIGURE 5. Paralleled Operation, Extended SOA. –8V FIGURE 6. Programmable Voltage Source. +35V +15V 1µF 1µF 100pF Digital Word Input 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 23 18 0.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 23-Apr-2013 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
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® PACKAGE DRAWING MMBC004
PAGE 12
MECHANICAL DATA MMBC005 – APRIL 2001 LMF (O–MBCY–W8) METAL CYLINDRICAL PACKAGE 1.550 (39,37) 1.510 (38,35) 0.770 (19,56) ø 0.105 (2,67) 0.080 (2,03) 0.745 (18,92) 0.300 (7,62) 0.260 (6,60) Seating Plane 0.500 (12,70) 0.400 (10,16) ø 0.042 (1,07) 0.038 (0,97) 1.192 (30,28) 1.182 (30,02) 0.596 (15,14) 0.591 (15,01) ø 0.161 (4,09) 0.151 (3,84) 40° 2 1 8 3 4 1.020 (25,91) 0.980 (24,89) 5 7 6 ø 0.500 (12,70) 4202491/A 03/01 NOTES: A. B. C. D. All linear dimensions are in inches (millimeters).
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