LT3957EUHE#TRPBF
ActiveDC/DC CNTRLR SINGLE-OUT FLYBACK/INVERTING/SEPIC 1200KHZ 28-PIN QFN EP T/R
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LT3957EUHE#TRPBF
ActiveDC/DC CNTRLR SINGLE-OUT FLYBACK/INVERTING/SEPIC 1200KHZ 28-PIN QFN EP T/R
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Technical Specifications
Parameters and characteristics for this part
| Specification | LT3957EUHE#TRPBF |
|---|---|
| Current - Output | 5 A |
| Frequency - Switching [Max] | 1 MHz |
| Frequency - Switching [Min] | 100 kHz |
| Function | Step-Up/Step-Down, Step-Up |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 C |
| Output Configuration | Positive or Negative |
| Output Type | Adjustable |
| Package / Case | 36-WFQFN, 28 Leads, Exposed Pad |
| Supplier Device Package | 36-QFN |
| Supplier Device Package [x] | 5 |
| Supplier Device Package [y] | 6 |
| Synchronous Rectifier | False |
| Topology | Boost, Cuk, Flyback, SEPIC |
| Voltage - Input (Min) [Min] | 3 V |
| Voltage - Output (Max) | 40 V |
| Voltage - Output (Min/Fixed) | 1.6 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 | Cut Tape (CT) | 1 | $ 10.22 | 1m+ |
| 10 | $ 7.11 | |||
| 25 | $ 6.31 | |||
| 100 | $ 5.41 | |||
| 250 | $ 4.98 | |||
| 500 | $ 4.72 | |||
| 1000 | $ 4.50 | |||
| Digi-Reel® | 1 | $ 10.22 | 1m+ | |
| 10 | $ 7.11 | |||
| 25 | $ 6.31 | |||
| 100 | $ 5.41 | |||
| 250 | $ 4.98 | |||
| 500 | $ 4.72 | |||
| 1000 | $ 4.50 | |||
| N/A | 2528 | $ 9.75 | 1m+ | |
| Tape & Reel (TR) | 2500 | $ 4.42 | 1m+ | |
Description
General part information
LT3957 Series
The LT3957 is a wide input range, current mode DC/DC converter which is capable of generating either positive or negative output voltages. It can be configured as either a boost, flyback, SEPIC or inverting converter. It features an internal low side N-channel power MOSFET rated for 40V at 5A and driven from an internal regulated 5.2V supply. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages.The operating frequency of LT3957 can be set with an external resistor over a 100kHz to 1MHz range, and can be synchronized to an external clock using the SYNC pin. A minimum operating supply voltage of 3V, and a low shutdown quiescent current of less than 1μA, make the LT3957 ideally suited for battery-powered systems.The LT3957 features soft-start and frequency foldback functions to limit inductor current during start-up.FeaturesLT3957-LT3957AImproved Load Transient PerformanceApplicationsAutomotiveTelecomIndustrial
Documents
Technical documentation and resources
