LT3825EFE#PBF
ActiveISOLATED NO-OPTO SYNCHRONOUS FLYBACK CONTROLLER WITH WIDE INPUT SUPPLY RANGE
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LT3825EFE#PBF
ActiveISOLATED NO-OPTO SYNCHRONOUS FLYBACK CONTROLLER WITH WIDE INPUT SUPPLY RANGE
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Technical Specifications
Parameters and characteristics for this part
| Specification | LT3825EFE#PBF |
|---|---|
| Clock Sync | True |
| Control Features | On Time Control, Enable, Frequency Control |
| Duty Cycle (Max) [Max] | 88 % |
| Frequency - Switching | 100 kHz |
| Function | Step-Up/Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 C |
| Output Configuration | Isolation Capable, Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) Exposed Pad |
| Supplier Device Package | 16-TSSOP-EP |
| Synchronous Rectifier | True |
| Topology | Flyback |
| Voltage - Supply (Vcc/Vdd) [Max] | 18 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 9.7 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | Updated |
|---|---|---|---|---|
| Digikey | N/A | 90 | $ 10.11 | 1m+ |
Description
General part information
LT3825 Series
The LT3825 is an isolated switching regulator controller designed for medium power flyback topologies. A typical application is 10W to 60W with input voltage limited only by external power path components. A third transformer winding provides output voltage feedback.The LT3825 is a current mode controller that regulates output voltage based on sensing secondary voltage via a transformer winding during flyback. This allows for tight output regulation without the use of an opto-isolator, improving dynamic response and reliability. Synchronous rectification increases converter efficiency and improves output cross regulation in multiple output converters.The LT3825 operates in forced continuous conduction mode which improves cross regulation in multiple winding applications. Switching frequency is user programmable and can be externally synchronized. The part also has load compensation, undervoltage lockout and soft-start circuity.ApplicationsIsolated Medium Power (10W to 60W) SuppliesIsolated Telecom, Medical ConvertersInstrumentation Power SuppliesIsolated Power over Ethernet Supplies
Documents
Technical documentation and resources