LTC3873EDDB#TRPBF
ActiveNO RSENSE™CONSTANT FREQUENCY CURRENT MODE BOOST/FLYBACK/SEPIC DC/DC CONTROLLER
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LTC3873EDDB#TRPBF
ActiveNO RSENSE™CONSTANT FREQUENCY CURRENT MODE BOOST/FLYBACK/SEPIC DC/DC CONTROLLER
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3873EDDB#TRPBF |
|---|---|
| Clock Sync | False |
| Control Features | Soft Start, Enable, Current Limit |
| Duty Cycle (Max) [Max] | 78 % |
| Function | Step-Up/Step-Down, Step-Up |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 85 C |
| Operating Temperature [Min] | -40 ¯C |
| Output Configuration | Isolation Capable, Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 8-WFDFN Exposed Pad |
| Supplier Device Package | 8-DFN (3x2) |
| Synchronous Rectifier | False |
| Topology | Boost, SEPIC, Flyback |
| Voltage - Supply (Vcc/Vdd) [Max] | 60 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 8.4 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 | 0 | $ 1.91 | 1m+ |
| Tape & Reel (TR) | 2500 | $ 1.97 | 1m+ | |
| 5000 | $ 1.91 | |||
Description
General part information
LTC3873 Series
The LTC3873 is a constant frequency, current mode, boost, flyback or SEPIC DC/DC controller that drives an N-channel power MOSFET in high input and output voltage converter applications. Soft-start can be programmed using an external capacitor.The LTC3873 provides ±1.5% output voltage accuracy and consumes only 300μA quiescent current during normal operation and only 55μA during micropower start-up. Using a 9.3V internal shunt regulator, the LTC3873 can be powered from a high input voltage through a resistor or it can be powered directly from a low impedance DC voltage of 9V or less.The LTC3873 is available in 8-lead ThinSOT and 2mm x 3mm DFN packages.LTC3873LTC3873-5VCCUV+8.4V4.1VVCCUV–4V2.9VAPPLICATIONSTelecom Power Supplies42V and 12V Automotive Power SuppliesPortable Electronic Equipment
