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SSL1750 датащи(PDF) 29 Page - NXP Semiconductors

номер детали SSL1750
подробное описание детали  SMPS control IC for LED drivers
PDF  29 Pages
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производитель  NXP [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo NXP - NXP Semiconductors

SSL1750 датащи(HTML) 29 Page - NXP Semiconductors

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NXP Semiconductors
SSL1750
SMPS control IC for LED drivers
© NXP B.V. 2008.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
Date of release: 15 September 2008
Document identifier: SSL1750_1
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
15. Contents
1
General description . . . . . . . . . . . . . . . . . . . . . . 1
2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.1
Distinctive features . . . . . . . . . . . . . . . . . . . . . . 1
2.2
Green features . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.3
PFC green features . . . . . . . . . . . . . . . . . . . . . 1
2.4
Flyback green features . . . . . . . . . . . . . . . . . . . 2
2.5
Protection features . . . . . . . . . . . . . . . . . . . . . . 2
3
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4
Ordering information . . . . . . . . . . . . . . . . . . . . . 3
5
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3
6
Pinning information . . . . . . . . . . . . . . . . . . . . . . 4
6.1
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
6.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
7
Functional description . . . . . . . . . . . . . . . . . . . 5
7.1
General control . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.1.1
Start-up and undervoltage lockout . . . . . . . . . . 6
7.1.2
Supply management. . . . . . . . . . . . . . . . . . . . . 8
7.1.3
Latch input . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.1.4
Fast latch reset . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.1.5
Overtemperature protection (OTP) . . . . . . . . . . 9
7.2
Power factor correction circuit. . . . . . . . . . . . . . 9
7.2.1
ton control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.2.2
Valley switching and demagnetization
(pin PFCAUX) . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.2.3
Frequency limitation . . . . . . . . . . . . . . . . . . . . 10
7.2.4
Mains voltage compensation
(pin VINSENSE) . . . . . . . . . . . . . . . . . . . . . . . 10
7.2.5
Soft start-up (pin PFCSENSE) . . . . . . . . . . . . 10
7.2.6
Burst mode control . . . . . . . . . . . . . . . . . . . . . 11
7.2.7
Overcurrent protection (pin PFCSENSE) . . . . 12
7.2.8
Mains undervoltage lockout / brownout
protection (pin VINSENSE). . . . . . . . . . . . . . . 12
7.2.9
Overvoltage protection (pin VOSENSE) . . . . . 12
7.2.10
PFC open loop protection (pin VOSENSE) . . 12
7.2.11
Driver (pin PFCDRIVER) . . . . . . . . . . . . . . . . 13
7.3
Flyback controller . . . . . . . . . . . . . . . . . . . . . . 13
7.3.1
Multimode operation . . . . . . . . . . . . . . . . . . . . 13
7.3.2
Valley switching (pin HV) . . . . . . . . . . . . . . . . 14
7.3.3
Current mode control (pin FBSENSE) . . . . . . 15
7.3.4
Demagnetization (pin FBAUX) . . . . . . . . . . . . 16
7.3.5
Flyback control / time-out (pin FBCTRL) . . . . 16
7.3.6
Soft start-up (pin FBSENSE) . . . . . . . . . . . . . 17
7.3.7
Maximum on-time . . . . . . . . . . . . . . . . . . . . . . 18
7.3.8
Overvoltage protection (pin FBAUX). . . . . . . . 18
7.3.9
Overcurrent protection (pin FBSENSE) . . . . . 19
7.3.10
Driver (pin FBDRIVER). . . . . . . . . . . . . . . . . . 19
8
Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 19
9
Thermal characteristics . . . . . . . . . . . . . . . . . 20
10
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 20
11
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 26
12
Revision history . . . . . . . . . . . . . . . . . . . . . . . 27
13
Legal information . . . . . . . . . . . . . . . . . . . . . . 28
13.1
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 28
13.2
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
13.3
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
13.4
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 28
14
Contact information . . . . . . . . . . . . . . . . . . . . 28
15
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29



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