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STBB2J-29 bảng dữ liệu(PDF) 2 Page - STMicroelectronics

tên linh kiện STBB2J-29
Giải thích chi tiết về linh kiện  800 mA 2.5 MHz, high efficiency dual mode buck-boost DC-DC converter
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STBB2J-29 bảng dữ liệu(HTML) 2 Page - STMicroelectronics

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Contents
STBB2
2/25
DocID022745 Rev 9
Contents
1
Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6
Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7
General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.1
Dual mode operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.2
Enable pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.3
Bypass operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.4
VSEL pin operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.5
Protection features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.5.1
Soft-start and short-circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.5.2
Undervoltage lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.5.3
Overtemperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8.1
Programming the output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8.2
Inductor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8.3
Input and output capacitor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8.4
Layout guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8.5
Product evaluation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.6
Thermal consideration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
10
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24


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