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参数资料
| 型号： | LM7812CT |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | Series Voltage Regulators |
| 中文描述： | 12 V FIXED POSITIVE REGULATOR, PSFM3 |
| 封装： | POWER, PLASTIC, TO-220, 3 PIN |
| 文件页数： | 1/8页 |
| 文件大小： | 147K |
| 代理商： | LM7812CT |
LM78XX
Series Voltage Regulators
General Description
The LM78XX series of three terminal regulators is available
with several fixed output voltages making them useful in a
wide range of applications. One of these is local on card
regulation, eliminating the distribution problems associated
with single point regulation. The voltages available allow
these regulators to be used in logic systems, instrumenta-
tion, HiFi, and other solid state electronic equipment. Al-
though designed primarily as fixed voltage regulators these
devices can be used with external components to obtain ad-
justable voltages and currents.
The LM78XX series is available in an aluminum TO-3 pack-
age which will allow over 1.0A load current if adequate heat
sinking is provided. Current limiting is included to limit the
peak output current to a safe value. Safe area protection for
the output transistor is provided to limit internal power dissi-
pation. If internal power dissipation becomes too high for the
heat sinking provided, the thermal shutdown circuit takes
over preventing the IC from overheating.
Considerable effort was expanded to make the LM78XX se-
ries of regulators easy to use and minimize the number of
external components. It is not necessary to bypass the out-
put, although this does improve transient response. Input by-
passing is needed only if the regulator is located far from the
filter capacitor of the power supply.
For output voltage other than 5V, 12V and 15V the LM117
series provides an output voltage range from 1.2V to 57V.
Features
n
Output current in excess of 1A
n
Internal thermal overload protection
n
No external components required
n
Output transistor safe area protection
n
Internal short circuit current limit
n
Available in the aluminum TO-3 package
Voltage Range
LM7805C
LM7812C
LM7815C
5V
12V
15V
Connection Diagrams
Metal Can Package
TO-3 (K)
Aluminum
DS007746-2
Bottom View
Order Number LM7805CK,
LM7812CK or LM7815CK
See NS Package Number KC02A
Plastic Package
TO-220 (T)
DS007746-3
Top View
Order Number LM7805CT,
LM7812CT or LM7815CT
See NS Package Number T03B
May 2000
L
2000 National Semiconductor Corporation
DS007746
www.national.com
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PDF描述 |
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| LM78L00 | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| LM78L00_SERIES | |
| LM78L05AF | FIXED VOLTAGE REGULATOR |
| LM78L12 | 3-Terminal Positive Regulators |
| LM1458A | |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM7812CT | 制造商:Fairchild Semiconductor Corporation 功能描述:V REG 14.5V TO 35V TO-220 制造商:Fairchild Semiconductor Corporation 功能描述:V REG, 14.5V TO 35V, TO-220 |
| LM7812CT/NOPB | 功能描述:线性稳压器 - 标准 RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| LM7812CT_12 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:3-Terminal 1A Positive Voltage Regulator |
| LM7812D-XX-AR | 制造商:TAITRON 制造商全称:TAITRON Components Incorporated 功能描述:1A Positive Voltage Regulator |
| LM7812D-XX-BL | 制造商:TAITRON 制造商全称:TAITRON Components Incorporated 功能描述:1A Positive Voltage Regulator |
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