LT3957EUHE#PBF
ActiveDC-DC SWITCHING BOOST REGULATOR, ADJUSTABLE, 3 TO 40V IN, 40V/5A OUT, QFN-EP-36
Deep-Dive with AI
Search across all available documentation for this part.
LT3957EUHE#PBF
ActiveDC-DC SWITCHING BOOST REGULATOR, ADJUSTABLE, 3 TO 40V IN, 40V/5A OUT, QFN-EP-36
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LT3957EUHE#PBF |
|---|---|
| Current - Output | 5 A |
| Frequency - Switching [Max] | 1 MHz |
| Frequency - Switching [Min] | 100 kHz |
| Function | Step-Up, Step-Up/Step-Down |
| 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 (5x6) |
| Synchronous Rectifier | False |
| Topology | Cuk, SEPIC, Boost, Flyback |
| Voltage - Input (Min) [Min] | 3 V |
| Voltage - Output (Max) [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
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