LTC3649IFE#PBF
Active60V, 4A SYNCHRONOUS STEP-DOWN REGULATOR WITH RAIL-TO-RAIL PROGRAMMABLE OUTPUT
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LTC3649IFE#PBF
Active60V, 4A SYNCHRONOUS STEP-DOWN REGULATOR WITH RAIL-TO-RAIL PROGRAMMABLE OUTPUT
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3649IFE#PBF |
|---|---|
| Current - Output | 4 A |
| Frequency - Switching | 1 MHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | Exposed Pad, 28-TSSOP |
| Package / Case [custom] | 4.4 mm |
| Package / Case [x] | 0.173 in |
| Supplier Device Package | 28-TSSOP-EP |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 60 V |
| Voltage - Input (Min) [Min] | 3.1 V |
| Voltage - Output (Max) [Max] | 55 V |
| Voltage - Output (Min/Fixed) | 0 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 | $ 19.43 | |
| 10 | $ 14.09 | |||
| 25 | $ 12.72 | |||
| 100 | $ 11.19 | |||
| 250 | $ 10.45 | |||
| 500 | $ 10.09 | |||
Description
General part information
LTC3649 Series
The LTC3649 is a high efficiency 60V, 4A synchronous monolithic step-down regulator. The regulator features a single resistor programmable output voltage, internal compensation and high efficiencies over a wide VOUTrange.The step-down regulator operates from an input voltage range of 3.1V to 60V and provides an adjustable rail-to-rail output range from (VIN– 0.5V) to ground while delivering up to 4A of output current. The switching frequency is also adjusted with an external resistor. A user-selectable mode input is provided to allow the user to trade off ripple noise for efficiency at light loads; Burst Mode operation provides the highest efficiency at light loads, while forced continuous mode provides low output ripple. The MODE/SYNC pin can also be used to allow the user to synchronize the switching frequency to an external clock.The LTC3649 operates with a peak current mode architecture that allows for fast transient response with inherent cycle-to-cycle current limit protection. It also features programmable output current limit, current monitoring and input voltage regulation.ApplicationsIndustrial ApplicationsAutomotive Applications
Documents
Technical documentation and resources