Datasheet LT3844 (Analog Devices) - 23
| Manufacturer | Analog Devices |
| Description | High Voltage, Current Mode Switching Regulator Controller with Programmable Operating Frequency |
| Pages / Page | 26 / 23 — Typical applicaTions. Two Phase Spread Spectrum 24V Input to 12V, 6A … |
| File Format / Size | PDF / 292 Kb |
| Document Language | English |
Typical applicaTions. Two Phase Spread Spectrum 24V Input to 12V, 6A Output
Model Line for this Datasheet
Text Version of Document
LT3844
Typical applicaTions Two Phase Spread Spectrum 24V Input to 12V, 6A Output
C5 0.22µF 16V R3 16 3M 1 VIN BOOST 2 15 SHDN TG M1 C1 R6 2200pF 3 14 C 270k SS SW 4 13 L1 R BURST_EN V D1a SENSE CC 15µH 0.02Ω BAV70 VOUT C4 5 LT3844 12 12V 2.2µF VFB PGND 6A C D1 OUT R1 6 11 10k V 22µF C SENSE+ R4 25V 7 10 4.99k D1b SYNC1 SYNC SENSE– BAV70 R2 C2 8 9 87.5k 680pF fSET SGND VIN 18V TO R5 36V CIN 49.9k 6.8µF 50V ×3 C15 0.22µF R22 R13 16V 10k 3M 1 16 VIN BOOST R21 2 15 49.9k SHDN TG M11 C11 R16 2200pF 3 14 1 10 270k CSS SW V+ SET 4 13 D11a L1 R BURST_EN V SENSE 2 9 CC BAV70 C14 15µH 0.02Ω DIV MOD 5 LT3844 12 2.2µF LTC6902 V 3 8 FB PGND PH GND D11 6 11 V 4 5 C SENSE+ SYNC1 OUT1 OUT2 SYNC2 C13 7 10 D11b 47pF SYNC2 SYNC SENSE– BAV70 R11 8 9 f R12 SET SGND 10k 3844 TA04 87.5k L1, L11 = VISHAY, IHLP5050FD-01 R15 M1, M11 = VISHAY, Si7850DP 49.9k D1, D11 = DIODES INC, PDS760 COUT = TDK, C4532X7R1E226K CIN = TDK, C4532X7R1H685K 3 1 OUT VIN LT1121-5 GND 2 3844fc For more information www.linear.com/LT3844 23 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
Typical applicaTions Two Phase Spread Spectrum 24V Input to 12V, 6A Output
C5 0.22µF 16V R3 16 3M 1 VIN BOOST 2 15 SHDN TG M1 C1 R6 2200pF 3 14 C 270k SS SW 4 13 L1 R BURST_EN V D1a SENSE CC 15µH 0.02Ω BAV70 VOUT C4 5 LT3844 12 12V 2.2µF VFB PGND 6A C D1 OUT R1 6 11 10k V 22µF C SENSE+ R4 25V 7 10 4.99k D1b SYNC1 SYNC SENSE– BAV70 R2 C2 8 9 87.5k 680pF fSET SGND VIN 18V TO R5 36V CIN 49.9k 6.8µF 50V ×3 C15 0.22µF R22 R13 16V 10k 3M 1 16 VIN BOOST R21 2 15 49.9k SHDN TG M11 C11 R16 2200pF 3 14 1 10 270k CSS SW V+ SET 4 13 D11a L1 R BURST_EN V SENSE 2 9 CC BAV70 C14 15µH 0.02Ω DIV MOD 5 LT3844 12 2.2µF LTC6902 V 3 8 FB PGND PH GND D11 6 11 V 4 5 C SENSE+ SYNC1 OUT1 OUT2 SYNC2 C13 7 10 D11b 47pF SYNC2 SYNC SENSE– BAV70 R11 8 9 f R12 SET SGND 10k 3844 TA04 87.5k L1, L11 = VISHAY, IHLP5050FD-01 R15 M1, M11 = VISHAY, Si7850DP 49.9k D1, D11 = DIODES INC, PDS760 COUT = TDK, C4532X7R1E226K CIN = TDK, C4532X7R1H685K 3 1 OUT VIN LT1121-5 GND 2 3844fc For more information www.linear.com/LT3844 23 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
