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ALED6001 데이터시트(PDF) 2 Page - STMicroelectronics

부품명 ALED6001
상세설명  Automotive-grade PWM-dimmable single channel LED driver with integrated boost controller
PDF  26 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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ALED6001 데이터시트(HTML) 2 Page - STMicroelectronics

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Contents
ALED6001
2/26
DocID026965 Rev 2
Contents
1
Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Pin function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7
Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.1
Device supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.2
Boost controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.2.1
Turn on and power-down sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.2.2
Boost controller operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.2.3
Boost converter stability and slope compensation . . . . . . . . . . . . . . . . . 14
7.2.4
Switching frequency oscillator and external synchronization . . . . . . . . . 16
7.3
LED current regulation and brightness control . . . . . . . . . . . . . . . . . . . . . 17
7.4
Device protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.4.1
Linear regulators undervoltage lockout . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.4.2
Power switch overcurrent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.4.3
Output overvoltage and OVFB pin disconnection . . . . . . . . . . . . . . . . . 20
7.4.4
Output rail disconnection detection or output short-circuit to ground . . . 21
7.4.5
Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.1
HTSSOP-16 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25



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