LTC3779HFE#PBF
Active150V VINAND VOUTSYNCHRONOUS 4-SWITCH BUCK-BOOST CONTROLLER
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LTC3779HFE#PBF
Active150V VINAND VOUTSYNCHRONOUS 4-SWITCH BUCK-BOOST CONTROLLER
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3779HFE#PBF |
|---|---|
| Clock Sync | False |
| Control Features | Current Limit, Soft Start, Power Good |
| Duty Cycle (Max) [Max] | 90 % |
| Frequency - Switching [Max] | 600 kHz |
| Frequency - Switching [Min] | 50 kHz |
| Function | Step-Down, Step-Up |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | Exposed Pad, 38-TFSOP |
| Package / Case | 31 Leads |
| Package / Case [custom] | 0.173 " |
| Package / Case [custom] | 4.4 mm |
| Supplier Device Package | 38-TSSOP-EP |
| Synchronous Rectifier | True |
| Topology | Boost, Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 150 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 19.77 | |
| 10 | $ 14.36 | |||
| 25 | $ 12.97 | |||
| 100 | $ 11.42 | |||
| 250 | $ 10.67 | |||
| 500 | $ 10.31 | |||
Description
General part information
LTC3779 Series
The LTC3779 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The constant frequency current mode architecture allows a phaselockable frequency of up to 600kHz, while an input/output constant current loop provides support for battery charging.With a wide 4.5V to 150V input and output range and seamless transfers between operating regions, the LTC3779 is ideal for automotive, telecom and batterypowered systems.The LTC3779 features a precision 1.2V reference and power good output indicator. The MODE pin can select between pulse-skipping mode or forced continuous mode of operation. Pulse-skipping mode offers high efficiency at light load while forced continuous mode operates at a constant frequency for noise sensitive applications. The PLLIN pin allows the IC to be synchronized to an external clock. The SS pin ramps the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions.ApplicationsIndustrial, Automotive, Medical, Military, Avionics
Documents
Technical documentation and resources