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參數(shù)資料
| 型號： | LM123K |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 3-Amp, 5-Volt Positive Regulator |
| 中文描述： | 5 V FIXED POSITIVE REGULATOR, MBFM2 |
| 封裝： | HERMETIC SEALED, METAL CAN, TO-3, 2 PIN |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 203K |
| 代理商： | LM123K |
LM123/LM323A/LM323
3-Amp, 5-Volt Positive Regulator
General Description
The LM123 is a three-terminal positive regulator with a pre-
set 5V output and a load driving capability of 3 amps. New
circuit design and processing techniques are used to provide
the high output current without sacrificing the regulation
characteristics of lower current devices.
The LM323A offers improved precision over the standard
LM323. Parameters with tightened specifications include
output voltage tolerance, line regulation, and load regulation.
The 3 amp regulator is virtually blowout proof. Current limit-
ing, power limiting, and thermal shutdown provide the same
high level of reliability obtained with these techniques in the
LM109 1 amp regulator.
No external components are required for operation of the
LM123. If the device is more than 4 inches from the filter ca-
pacitor, however, a 1 μF solid tantalum capacitor should be
used on the input. A 0.1 μF or larger capacitor may be used
on the output to reduce load transient spikes created by fast
switching digital logic, or to swamp out stray load capaci-
tance.
An overall worst case specification for the combined effects
of input voltage, load currents, ambient temperature, and
power dissipation ensure that the LM123 will perform satis-
factorily as a system element.
For applications requiring other voltages, see LM150 series
adjustable regulator data sheet.
Operation is guaranteed over the junction temperature range
55C to +150C for LM123, 40C to +125C for LM323A,
and 0C to +125C for LM323. A hermetic TO-3 package is
used for high reliability and low thermal resistance.
Features
n
Guaranteed 1% initial accuracy (A version)
n
3 amp output current
n
Internal current and thermal limiting
n
0.01
typical output impedance
n
7.5V minimum input voltage
n
30W power dissipation
n
P
+
Product Enhancement tested
Connection Diagram
Typical Applications
Metal Can Package
DS007771-2
Order Number LM123K STEEL, LM323AK STEEL or LM323K STEEL
See NS Package Number K02A
Order Number LM123K/883
See NS Package Number K02C
Basic 3 Amp Regulator
DS007771-3
*Required if LM123 is more than 4" from filter capacitor.
Regulator is stable with no load capacitor into resistive loads.
April 1998
L
1999 National Semiconductor Corporation
DS007771
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM123 | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| LM123K-05 | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| LM123K-12 | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| LM123K-15 | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| LM123K-STEEL | 3-Amp, 5-Volt Positive Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM123K/883 | 制造商:Texas Instruments 功能描述:Standard Regulator Pos 5V 3A 3-Pin(2+Tab) TO-3 Tray 制造商:Texas Instruments 功能描述:STD REG 5V 3A 3PIN TO-3 - Rail/Tube |
| LM123K/883B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Fixed Voltage Regulator |
| LM123K/STEEL/883C | 制造商:National Semi 功能描述:Regulator |
| LM123K-05 | 制造商:SEME-LAB 制造商全稱:Seme LAB 功能描述:3 AMP POSITIVE VOLTAGE REGULATORS |
| LM123K-05-BSS2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Regulator |
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