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NXP Semiconductors
SSL1750
SMPS control IC for LED drivers
15. Contents
1
2
2.1
2.2
2.3
2.4
2.5
3
4
5
6
6.1
6.2
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Distinctive features . . . . . . . . . . . . . . . . . . . . . . 1
Green features . . . . . . . . . . . . . . . . . . . . . . . . . 1
PFC green features . . . . . . . . . . . . . . . . . . . . . 1
Flyback green features . . . . . . . . . . . . . . . . . . . 2
Protection features . . . . . . . . . . . . . . . . . . . . . . 2
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Ordering information . . . . . . . . . . . . . . . . . . . . . 3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pinning information . . . . . . . . . . . . . . . . . . . . . . 4
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
8
9
10
11
12
13
13.1
13.2
13.3
13.4
14
15
Limiting values . . . . . . . . . . . . . . . . . . . . . . . .
Thermal characteristics . . . . . . . . . . . . . . . . .
Characteristics . . . . . . . . . . . . . . . . . . . . . . . .
Package outline . . . . . . . . . . . . . . . . . . . . . . . .
Revision history . . . . . . . . . . . . . . . . . . . . . . .
Legal information . . . . . . . . . . . . . . . . . . . . . .
Data sheet status . . . . . . . . . . . . . . . . . . . . . .
De?nitions . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . .
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . .
Contact information . . . . . . . . . . . . . . . . . . . .
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19
20
20
26
27
28
28
28
28
28
28
29
7
7.1
7.1.1
7.1.2
7.1.3
7.1.4
7.1.5
7.2
7.2.1
7.2.2
Functional description . . . . . . . . . . . . . . . . . . . 5
General control . . . . . . . . . . . . . . . . . . . . . . . . . 5
Start-up and undervoltage lockout . . . . . . . . . . 6
Supply management. . . . . . . . . . . . . . . . . . . . . 8
Latch input . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Fast latch reset . . . . . . . . . . . . . . . . . . . . . . . . . 9
Overtemperature protection (OTP) . . . . . . . . . . 9
Power factor correction circuit. . . . . . . . . . . . . . 9
t on control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
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
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
? 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
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相关代理商/技术参数
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SSL1D101BD
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