LM12CL National Semiconductor, LM12CL Datasheet

LM12CL

Manufacturer Part Number

LM12CL

Description

80W Operational Amplifier

Manufacturer

National Semiconductor

Datasheet

1.LM12CL.pdf (14 pages)

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LM12CL

80W Operational Amplifier

General Description

The LM12 is a power op amp capable of driving

can deliver 80W of sine wave power into a 4

0.01% distortion. Power bandwidth is 60 kHz. Further, a

peak dissipation capability of 800W allows it to handle reac-

tive loads such as transducers, actuators or small motors

without derating. Important features include:

The IC delivers

yet is completely protected against overloads, including

shorts to the supplies. The dynamic safe-area protection is

provided by instantaneous peak-temperature limiting within

the power transistor array.

The turn-on characteristics are controlled by keeping the

output open-circuited until the total supply voltage reaches

14V. The output is also opened as the case temperature ex-

Connection Diagram

4-pin glass epoxy TO-3

socket is available from

AUGAT INC.

Part number 8112-AG7

• input protection

• controlled turn on

• thermal limiting

• overvoltage shutdown

• output-current limiting

• dynamic safe-area protection

10A while operating from

See NS Package Number K04A

Order Number LM12CLK

10A output current at any output voltage

Bottom View

30V supplies. The monolithic IC

DS008704-1

DS008704

load with

25V at

ceeds 150˚C or as the supply voltage approaches the

ages to 80V.

This monolithic op amp is compensated for unity-gain feed-

back, with a small-signal bandwidth of 700 kHz. Slew rate is

9V/µs, even as a follower. Distortion and capacitive-load sta-

bility rival that of the best designs using complementary out-

put transistors. Further, the IC withstands large differential

input

common-mode range be exceeded.

The LM12 establishes that monolithic ICs can deliver consid-

erable output power without resorting to complex switching

schemes. Devices can be paralleled or bridged for even

greater output capability. Applications include operational

power supplies, high-voltage regulators, high-quality audio

amplifiers, tape-head positioners, x-y plotters or other

servo-control systems.

The LM12 is supplied in a four-lead, TO-3 package with V−

on the case. A gold-eutectic die-attach to a molybdenum in-

terface is used to avoid thermal fatigue problems. The LM12

is specified for either military or commercial temperature

range.

Typical Application

*Low distortion (0.01%) audio amplifier

CEO

of the output transistors. The IC withstands overvolt-

voltages

and

well

behaved

DS008704-2

www.national.com

should

May 1999

the

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