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LM123 データシート(PDF) 1 Page - Texas Instruments

部品番号 LM123
部品情報  3-Amp, 5-Volt Positive Regulator
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ホームページ  http://www.ti.com
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LM123 データシート(HTML) 1 Page - Texas Instruments

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LM123, LM323-N, LM323A
www.ti.com
SNVS757B – MAY 2004 – REVISED NOVEMBER 2004
LM123/LM323A/LM323-N 3-Amp, 5-Volt Positive Regulator
Check for Samples: LM123, LM323-N, LM323A
The 3 amp regulator is virtually blowout proof.
1
FEATURES
Current limiting, power limiting, and thermal shutdown
2
Ensured 1% Initial Accuracy (A Version)
provide the same high level of reliability obtained with
3 Amp Output Current
these techniques in the LM109 1 amp regulator.
Internal Current and Thermal Limiting
No external components are required for operation of
0.01
Ω Typical Output Impedance
the LM123. If the device is more than 4 inches from
the filter capacitor, however, a 1
μF solid tantalum
7.5V Minimum Input Voltage
capacitor should be used on the input. A 0.1
μF or
30W Power Dissipation
larger capacitor may be used on the output to reduce
P+ Product Enhancement tested
load transient spikes created by fast switching digital
logic, or to swamp out stray load capacitance.
DESCRIPTION
An overall worst case specification for the combined
The LM123 is a three-terminal positive regulator with
effects of input voltage, load currents, ambient
a preset 5V output and a load driving capability of 3
temperature, and power dissipation ensure that the
amps. New circuit design and processing techniques
LM123
will
perform
satisfactorily
as
a
system
are used to provide the high output current without
element.
sacrificing the regulation characteristics of lower
For applications requiring other voltages, see LM150
current devices.
series adjustable regulator data sheet.
The LM323A offers improved precision over the
Operation is specified over the junction temperature
standard
LM323-N.
Parameters
with
tightened
range
−55°C to +150°C for LM123, −40°C to +125°C
specifications include output voltage tolerance, line
for LM323A, and 0°C to +125°C for LM323-N. A
regulation, and load regulation.
hermetic TO-3 package is used for high reliability and
low thermal resistance.
Connection Diagram
Metal Can Package
Figure 1. See Package Number NDS
1
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.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2004, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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