LTC3873ETS8-5#TRMPBF
ActiveNO RSENSE™CONSTANT FREQUENCY CURRENT MODE BOOST/FLYBACK/SEPIC DC/DC CONTROLLER
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LTC3873ETS8-5#TRMPBF
ActiveNO RSENSE™CONSTANT FREQUENCY CURRENT MODE BOOST/FLYBACK/SEPIC DC/DC CONTROLLER
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3873ETS8-5#TRMPBF |
|---|---|
| Clock Sync | False |
| Control Features | Current Limit, Soft Start, Enable |
| Duty Cycle (Max) [Max] | 78 % |
| Function | Step-Up, Step-Up/Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive, Isolation Capable |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | SOT-23-8 Thin, TSOT-23-8 |
| Supplier Device Package | TSOT-23-8 |
| Synchronous Rectifier | False |
| Topology | Flyback, SEPIC, Boost |
| Voltage - Supply (Vcc/Vdd) [Max] | 60 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4.1 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 5.41 | |
| 10 | $ 3.62 | |||
| 25 | $ 3.16 | |||
| 100 | $ 2.64 | |||
| 250 | $ 2.39 | |||
| Digi-Reel® | 1 | $ 5.41 | ||
| 10 | $ 3.62 | |||
| 25 | $ 3.16 | |||
| 100 | $ 2.64 | |||
| 250 | $ 2.39 | |||
| Tape & Reel (TR) | 500 | $ 2.23 | ||
| 1000 | $ 2.10 | |||
| 1500 | $ 2.04 | |||
| 2500 | $ 1.97 | |||
| 3500 | $ 1.93 | |||
| 5000 | $ 1.91 | |||
Description
General part information
LTC3873-5 Series
The LTC3873-5 is a constant frequency current mode controller for boost, flyback or SEPIC DC/DC converters designed to drive an N-channel MOSFET for high input and output voltage converter applications.The LTC3873-5 provides ±1.5% output voltage accuracy and consumes only 300μA quiescent current during normal operation and only 50μA during micropower start-up. Using a 9.3V internal shunt regulator, the LTC3873-5 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. Soft-start can be programmed using an external capacitor.The LTC3873-5 is available in 8-lead ThinSOT and 2mm × 3mm DFN packages.LTC3873LTC3873-5VCCUV+8.4V3.9VVCCUV–4V2.9VApplicationsTelecom Power SuppliesAutomotive Power SuppliesPoE Applications
Documents
Technical documentation and resources