Datasheet LT3932, LT3932-1 (Analog Devices) - 25
| Manufacturer | Analog Devices |
| Description | 36V, 2A Synchronous Step-Down LED Driver |
| Pages / Page | 30 / 25 — TYPICAL APPLICATIONS. CISPR25 Peak Conducted Emissions Test. CISPR25 Peak … |
| Revision | B |
| File Format / Size | PDF / 4.7 Mb |
| Document Language | English |
TYPICAL APPLICATIONS. CISPR25 Peak Conducted Emissions Test. CISPR25 Peak Radiated Emissions Test
Model Line for this Datasheet
Text Version of Document
LT3932/LT3932-1
TYPICAL APPLICATIONS
D1 INTVCC FB1 VIN VIN 8V TO 36V BST CIN1 CIN2 CIN3 CIN4 CIN5 R CBST L1 2x100nF 4.7µF 33µF 1µF EN2 2x470nF 22nF 232k 2.2µH 50V 50V 50V 50V 50V 1206 ELYT. 0603 0402 EN/UVLO SW 0402 REN1 VOUT 39.2k RFB2 69.8k LT3932 COUT VREF FB R 4.7µF C 1A MAX REF FB1 CTRL 2.2µF 16V 10k PWM 0805 GND ISP RS 100mΩ ISN INTVCC PWMTG M1 RS: SUSUMU KRL1220D-M-R100-F D1: NXP PMEG4010CEJ SYNC/SPRD FB1,2: WURTH 742792040 CVCC L1: WURTH 74438323022 10µF M1: VISHAY Si2399DS FB2 D1: NEXPERIA BAT46WJ SS RT RP VC R LED1 C T RC SS CB2 ISMON, FAULT NOT USED 1nF 45.3k 24.9k 100nF D1 2MHz CC 16V LED2 150pF 0402 3932 TA07
CISPR25 Peak Conducted Emissions Test CISPR25 Peak Radiated Emissions Test
80 80 CLASS 5 PEAK LIMIT 70 70 MEASURED EMISSIONS 60 AMBIENT NOISE 60 50 V) 50 V/m) 40 40 30 30 20 20 AMPLITUDE (dBµ 10 10 AMPLITUDE (dBµ 0 CLASS 5 PEAK LIMIT 0 –10 MEASURED EMISSIONS –10 AMBIENT NOISE –20 –20 0.1 1 10 100 200 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (MHz) FREQUENCY (MHz) DC2286A DEMO BOARD 3932 TA07a DC2286A DEMO BOARD 3932 TA07b 14V INPUT TO 6V OUTPUT AT 1A 14V INPUT TO 6V OUTPUT AT 1A
CISPR25 Average Conducted Emissions Test CISPR25 Average Radiated Emissions Test
80 80 CLASS 5 AVERAGE LIMIT CLASS 5 AVERAGE LIMIT 70 MEASURED EMISSIONS 70 MEASURED EMISSIONS AMBIENT NOISE 60 AMBIENT NOISE 60 50 V) 50 V/m) 40 40 30 30 20 20 AMPLITUDE (dBµ 10 10 AMPLITUDE (dBµ 0 0 –10 –10 –20 –20 0.1 1 10 100 200 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (MHz) FREQUENCY (MHz) DC2286A DEMO BOARD 3932 TA07c DC2286A DEMO BOARD 3932 TA07d 14V INPUT TO 6V OUTPUT AT 1A 14V INPUT TO 6V OUTPUT AT 1A Rev B For more information www.analog.com 25 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL APPLICATIONS
D1 INTVCC FB1 VIN VIN 8V TO 36V BST CIN1 CIN2 CIN3 CIN4 CIN5 R CBST L1 2x100nF 4.7µF 33µF 1µF EN2 2x470nF 22nF 232k 2.2µH 50V 50V 50V 50V 50V 1206 ELYT. 0603 0402 EN/UVLO SW 0402 REN1 VOUT 39.2k RFB2 69.8k LT3932 COUT VREF FB R 4.7µF C 1A MAX REF FB1 CTRL 2.2µF 16V 10k PWM 0805 GND ISP RS 100mΩ ISN INTVCC PWMTG M1 RS: SUSUMU KRL1220D-M-R100-F D1: NXP PMEG4010CEJ SYNC/SPRD FB1,2: WURTH 742792040 CVCC L1: WURTH 74438323022 10µF M1: VISHAY Si2399DS FB2 D1: NEXPERIA BAT46WJ SS RT RP VC R LED1 C T RC SS CB2 ISMON, FAULT NOT USED 1nF 45.3k 24.9k 100nF D1 2MHz CC 16V LED2 150pF 0402 3932 TA07
CISPR25 Peak Conducted Emissions Test CISPR25 Peak Radiated Emissions Test
80 80 CLASS 5 PEAK LIMIT 70 70 MEASURED EMISSIONS 60 AMBIENT NOISE 60 50 V) 50 V/m) 40 40 30 30 20 20 AMPLITUDE (dBµ 10 10 AMPLITUDE (dBµ 0 CLASS 5 PEAK LIMIT 0 –10 MEASURED EMISSIONS –10 AMBIENT NOISE –20 –20 0.1 1 10 100 200 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (MHz) FREQUENCY (MHz) DC2286A DEMO BOARD 3932 TA07a DC2286A DEMO BOARD 3932 TA07b 14V INPUT TO 6V OUTPUT AT 1A 14V INPUT TO 6V OUTPUT AT 1A
CISPR25 Average Conducted Emissions Test CISPR25 Average Radiated Emissions Test
80 80 CLASS 5 AVERAGE LIMIT CLASS 5 AVERAGE LIMIT 70 MEASURED EMISSIONS 70 MEASURED EMISSIONS AMBIENT NOISE 60 AMBIENT NOISE 60 50 V) 50 V/m) 40 40 30 30 20 20 AMPLITUDE (dBµ 10 10 AMPLITUDE (dBµ 0 0 –10 –10 –20 –20 0.1 1 10 100 200 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (MHz) FREQUENCY (MHz) DC2286A DEMO BOARD 3932 TA07c DC2286A DEMO BOARD 3932 TA07d 14V INPUT TO 6V OUTPUT AT 1A 14V INPUT TO 6V OUTPUT AT 1A Rev B For more information www.analog.com 25 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Description Revision History Typical Application Related Parts
