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STBB1-APUR датащи(PDF) 2 Page - STMicroelectronics

номер детали STBB1-APUR
подробное описание детали  1 A, high efficiency single inductor dual mode buck-boost DC-DC converter
PDF  22 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STBB1-APUR датащи(HTML) 2 Page - STMicroelectronics

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Contents
STBB1-AXX
2/22
Doc ID 022197 Rev 2
Contents
1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6
Detailed description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1
General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.2
Dual mode operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.3
External synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.4
Enable pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.5
Protection features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.5.1
Soft-start and short-circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.5.2
Undervoltage lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.5.3
Over-temperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7
Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.1
Programming the output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.2
Inductor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.3
Input and output capacitor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9
Recommended PCB layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
10
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
11
Different output voltage versions of the STBB1-A
available on request . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
12
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21



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