admin 管理员组文章数量: 1086019
2024年3月25日发(作者：linux系统安装和windows区别)
LM7805C,LM7812C,LM7815C
LM78XX Series Voltage Regulators
Literature Number: SNOSBR7C
LM78XX Series Voltage Regulators
OBSOLETE
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 reg-
ulation, eliminating the distribution problems associated with
single point regulation. The voltages available allow these
regulators to be used in logic systems, instrumentation, HiFi,
and other solid state electronic equipment. Although de-
signed primarily as fixed voltage regulators these devices can
be used with external components to obtain adjustable volt-
ages 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
October 6, 2011
external components. It is not necessary to bypass the output,
although this does improve transient response. Input bypass-
ing 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
■
■
■
■
■
■
Output current in excess of 1A
Internal thermal overload protection
No external components required
Output transistor safe area protection
Internal short circuit current limit
Available in the aluminum TO-3 package
Voltage Range
LM7805C
LM7812C
LM7815C
5V
12V
15V
Connection Diagrams
Metal Can Package
TO-3 (K)
Aluminum
Plastic Package
TO-220 (T)
Bottom View
Order Number LM7805CK,
LM7812CK or LM7815CK
See NS Package Number KC02A
774602
Top View
Order Number LM7805CT,
LM7812CT or LM7815CT
See NS Package Number T03B
774603
© 2011 National Semiconductor Corporation7746
Print Date/Time: 2011/10/06 10:52:33
7746 Version 6 Revision 2
版权声明：本文标题：lm7805稳压块手册-常用电路 内容由网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：http://www.roclinux.cn/b/1711347611a589653.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。
发表评论