MB39C604 Datasheet, PDF (2/36 Pages) Cypress Semiconductor – PSR topology in an isolated flyback circuit

MB39C604
Contents
1. Pin Assignment ................................................................................................................................................................. 3
2. Pin Descriptions................................................................................................................................................................ 4
3. Block Diagram ................................................................................................................................................................... 5
4. Absolute Maximum Ratings ............................................................................................................................................. 6
5. Recommended Operating Conditions............................................................................................................................. 7
6. Electrical Characteristics ................................................................................................................................................. 8
7. Standard Characteristics................................................................................................................................................ 10
8. Function Explanations.................................................................................................................................................... 11
8.1 LED Current Control by PSR (Primary Side Regulation) ............................................................................................. 11
8.2 PFC (Power Factor Correction) Function .................................................................................................................... 12
8.3 Dimming Function ....................................................................................................................................................... 12
8.4 Power-On Sequence ................................................................................................................................................... 13
8.5 Power-Off Sequence ................................................................................................................................................... 14
8.6 I_{P_PEAK} Detection Function ........................................................................................................................................... 14
8.7 Zero Voltage Switching Function ................................................................................................................................. 14
8.8 Protection Functions.................................................................................................................................................... 15
9. I/O Pin Equivalent Circuit Diagram ................................................................................................................................ 16
10. Application Examples ..................................................................................................................................................... 18
10.1 50W Isolated and PWM Dimming Application ............................................................................................................. 18
10.2 5W Non-Isolated and Non-Dimming Application ......................................................................................................... 24
11. Usage Precautions.......................................................................................................................................................... 29
12. Ordering Information ...................................................................................................................................................... 30
13. Marking Format ............................................................................................................................................................... 31
14. Recommended Mounting Condition [JEDEC Level3] Lead Free ................................................................................ 32
14.1 Recommended Reflow Condition ................................................................................................................................ 32
14.2 Reflow Profile .............................................................................................................................................................. 32
15. Package Dimensions ...................................................................................................................................................... 33
16. Major Changes ................................................................................................................................................................ 34
Document History................................................................................................................................................................. 35
Document Number: 002-08441 Rev.*A
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