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CD00257532 bảng dữ liệu(PDF) 2 Page - STMicroelectronics

tên linh kiện CD00257532
Giải thích chi tiết về linh kiện  Multifunction very low drop voltage regulator
Download  19 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

CD00257532 bảng dữ liệu(HTML) 2 Page - STMicroelectronics

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Contents
L4949ED-E, L4949EP-E
2/19
Doc ID 16823 Rev 1
Contents
1
Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1
Supply voltage transient
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3
Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4
Preregulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.5
Reset circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.6
Sense comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4
Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1
ECOPACK® packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2
SO-8 TP package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3
SO-20 TP package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18


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