LTC7149IUFD#TRPBF
Active60V, 4A SYNCHRONOUS STEP-DOWN REGULATOR FOR INVERTING OUTPUTS
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LTC7149IUFD#TRPBF
Active60V, 4A SYNCHRONOUS STEP-DOWN REGULATOR FOR INVERTING OUTPUTS
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC7149IUFD#TRPBF |
|---|---|
| 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 | Negative |
| Output Type | Adjustable |
| Package / Case | 28-WFQFN Exposed Pad |
| Supplier Device Package | 28-QFN (4x5) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 60 V |
| Voltage - Input (Min) [Min] | 3.4 V |
| Voltage - Output (Max) [Max] | -28 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 | Tape & Reel (TR) | 2500 | $ 9.66 | |
Description
General part information
LTC7149 Series
The LTC7149 is a high efficiency 60V, 4A synchronous monolithic step-down regulator for inverting output applications. The regulator features a single resistor programmable output voltage and high efficiency over a wide VOUTrange.The inverting regulator operates from an input voltage range of 3.4V to 60V and provides an adjustable output from (–28V) to zero volts while delivering up to 4A of inductor current. The switching frequency is also set 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 synchronize the switching frequency to an external clock. Internal level-shift circuits allow the I/O pins (RUN, MODE/SYNC, PGOOD) to be referenced to board GND.The LTC7149 operates with a peak current mode architecture that allows for fast transient response with inherent cycle-to-cycle current limit protection.ApplicationsIndustrial ApplicationsTelecom Power SuppliesDistributed Power Systems
Documents
Technical documentation and resources