Datasheet LT8645S-2 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | 65V, 8A Synchronous Step-Down Silent Switcher with 2.5µA Quiescent Current |
| Pages / Page | 28 / 10 — TYPICAL PERFORMANCE CHARACTERISTICS. Conducted EMI Performance. Radiated … |
| File Format / Size | PDF / 2.1 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Conducted EMI Performance. Radiated EMI Performance
Text Version of Document
LT8645S-2
TYPICAL PERFORMANCE CHARACTERISTICS Conducted EMI Performance
60 50 40 30 V) Bµ 20 10 0 –10 AMPLITUDE (d –20 FIXED FREQUENCY MODE –30 SPREAD SPECTRUM MODE –40 0 3 6 9 12 15 18 21 24 27 30 FREQUENCY (MHz) DC2468A DEMO BOARD USING LT8645S 8645S-2 G40 (WITH EMI FILTER INSTALLED) 14V INPUT TO 5V OUTPUT AT 4A, fSW = 2MHz
Radiated EMI Performance (CISPR25 Radiated Emission Test with Class 5 Peak Limits)
50 VERTICAL POLARIZATION 45 PEAK DETECTOR 40 35 V/m) 30 25 20 15 AMPLITUDE (dBµ 10 5 CLASS 5 PEAK LIMIT SPREAD SPECTRUM MODE 0 FIXED FREQUENCY MODE –5 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (MHz) 8645S-2 G41 50 HORIZONTAL POLARIZATION 45 PEAK DETECTOR 40 35 V/m) 30 25 20 15 AMPLITUDE (dBµ 10 5 CLASS 5 PEAK LIMIT SPREAD SPECTRUM MODE 0 FIXED FREQUENCY MODE –5 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (MHz) DC2468A DEMO BOARD USING LT8645S 8645S-2 G42 (WITH EMI FILTER INSTALLED) 14V INPUT TO 5V OUTPUT AT 4A, fSW = 2MHz Rev 0 10 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Applications Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Conducted EMI Performance
60 50 40 30 V) Bµ 20 10 0 –10 AMPLITUDE (d –20 FIXED FREQUENCY MODE –30 SPREAD SPECTRUM MODE –40 0 3 6 9 12 15 18 21 24 27 30 FREQUENCY (MHz) DC2468A DEMO BOARD USING LT8645S 8645S-2 G40 (WITH EMI FILTER INSTALLED) 14V INPUT TO 5V OUTPUT AT 4A, fSW = 2MHz
Radiated EMI Performance (CISPR25 Radiated Emission Test with Class 5 Peak Limits)
50 VERTICAL POLARIZATION 45 PEAK DETECTOR 40 35 V/m) 30 25 20 15 AMPLITUDE (dBµ 10 5 CLASS 5 PEAK LIMIT SPREAD SPECTRUM MODE 0 FIXED FREQUENCY MODE –5 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (MHz) 8645S-2 G41 50 HORIZONTAL POLARIZATION 45 PEAK DETECTOR 40 35 V/m) 30 25 20 15 AMPLITUDE (dBµ 10 5 CLASS 5 PEAK LIMIT SPREAD SPECTRUM MODE 0 FIXED FREQUENCY MODE –5 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (MHz) DC2468A DEMO BOARD USING LT8645S 8645S-2 G42 (WITH EMI FILTER INSTALLED) 14V INPUT TO 5V OUTPUT AT 4A, fSW = 2MHz Rev 0 10 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Applications Related Parts
