Datasheet LT3990, LT3990-3.3, LT3990-5 (Analog Devices) - 8
| Manufacturer | Analog Devices |
| Description | 62V, 350mA Step-Down Regulator with 2.5μA Quiescent Current and Integrated Diodes |
| Pages / Page | 22 / 8 — BLOCK DIAGRAM |
| File Format / Size | PDF / 307 Kb |
| Document Language | English |
BLOCK DIAGRAM
Model Line for this Datasheet
- LT3990EDD#PBF LT3990EDD#TRPBF LT3990EMSE#PBF LT3990EMSE#TRPBF LT3990EMSE-3.3#PBF LT3990EMSE-3.3#TRPBF LT3990EMSE-5#PBF LT3990EMSE-5#TRPBF LT3990EMSE-5#WTRPBF LT3990HMSE#PBF LT3990HMSE#TRPBF LT3990HMSE-3.3#PBF LT3990HMSE-3.3#TRPBF LT3990HMSE-5#PBF LT3990HMSE-5#TRPBF LT3990IDD#PBF LT3990IDD#TRPBF LT3990IMSE#PBF LT3990IMSE#TRPBF LT3990IMSE-3.3#PBF LT3990IMSE-3.3#TRPBF LT3990IMSE-5#PBF LT3990IMSE-5#TRPBF
Text Version of Document
LT3990/LT3990-3.3/LT3990-5
BLOCK DIAGRAM
V V IN INC1 INTERNAL 1.21V REF – 1.19V + BD EN/UVLO SHDN + – DBOOST SLOPE COMP SWITCH LATCH BOOST R RT OSCILLATOR Q 200kHz TO 2.2MHz C3 S RT PG + 1.09V + SW L1 ERROR VC Burst Mode VOUT AMP DETECT DCATCH C2 – – R2 R1 GND FB LT3990 LT3990-X V ONLY ONLY* OUT R2 R1 3990 BD *LT3990-3.3: R1 = 12.65M, R2 = 7.35M LT3990-5: R1 = 15.15M, R2 = 4.85M 3990fa 8 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
BLOCK DIAGRAM
V V IN INC1 INTERNAL 1.21V REF – 1.19V + BD EN/UVLO SHDN + – DBOOST SLOPE COMP SWITCH LATCH BOOST R RT OSCILLATOR Q 200kHz TO 2.2MHz C3 S RT PG + 1.09V + SW L1 ERROR VC Burst Mode VOUT AMP DETECT DCATCH C2 – – R2 R1 GND FB LT3990 LT3990-X V ONLY ONLY* OUT R2 R1 3990 BD *LT3990-3.3: R1 = 12.65M, R2 = 7.35M LT3990-5: R1 = 15.15M, R2 = 4.85M 3990fa 8 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
