LM12CLK

Manufacturer Part NumberLM12CLK
Description80W Operational Amplifier
ManufacturerNational Semiconductor
LM12CLK datasheet
 


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LM12CL
80W Operational Amplifier
General Description
The LM12 is a power op amp capable of driving ±25V at ±10A
while operating from ±30V supplies. The monolithic IC can
deliver 80W of sine wave power into a 4Ω load with 0.01%
distortion. Power bandwidth is 60 kHz. Further, a peak dissi-
pation capability of 800W allows it to handle reactive loads
such as transducers, actuators or small motors without der-
ating. Important features include:
input protection
controlled turn on
thermal limiting
overvoltage shutdown
output-current limiting
dynamic safe-area protection
The IC delivers ±10A output current at any output voltage 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 out-
put open-circuited until the total supply voltage reaches 14V.
The output is also opened as the case temperature exceeds
150°C or as the supply voltage approaches the BV
output transistors. The IC withstands overvoltages to 80V.
Connection Diagram
4-pin glass epoxy TO-3
socket is available from
AUGAT INC.
Part number 8112-AG7
Bottom View
Order Number LM12CLK
See NS Package Number K04A
© 2008 National Semiconductor Corporation
8704 Version 7 Revision 4
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 voltages and is well behaved should the 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.
of the
CEO
Typical Application*
*Low distortion (0.01%) audio amplifier
870401
8704
Print Date/Time: 2008/09/16 12:48:40
OBSOLETE
September 16, 2008
870402
www.national.com

LM12CLK Summary of contents