棉花糖机械ST L78xxAB L78xxAC handbook
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July 2008
Rev 17
1/26
L78xxAB L78xxAC
Precision 1 A regulators
Features
■Output current in excess of 1 A抗生素制作方法
■Output voltages of 5; 6; 8; 9; 12; 15; 24 V ■Thermal overload protection ■Output transition SOA protection ■ 2 % Output voltage tolerance
■
Guaranteed in extended temperature range屋顶融雪装置
Description
The L78xxAB L78xxAC series of three terminal positive regulators are available in TO-220,TO-220FP , and D 2PAK packages and several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problem associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area
四甲基环丁烷protection, making it essentially indestructible. If adequate heat sinking is provided, they can
deliver over 1 A output current, although designed primarily as fixed voltage regulators, these
devices can be used with external components to obtain adjustable voltage and currents.
Table 1.Device summary
Order codes
L7805AB L7809AC L7805AC L7812AB L7806AB L7812AC L7806AC L7815AB L7808AB L7815AC L7808AC L7824AB L7809AB
L7824AC
www.st
Contents L78xxAB - L78xxAC
Contents
1Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.1Design consideration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 9Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2/26
L78xxAB - L78xxAC Diagram 1 Diagram
3/26
台阶轴
Pin configuration L78xxAB - L78xxAC 2 Pin configuration假牙加工
4/26
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