LT7170RV-1#TRMPBF
Active20 A, 16 V, SINGLE- OR DUAL-PHASE, SILENT SWITCHER STEP-DOWN REGULATORS WITH DIGITAL POWER SYSTEM MANAGEMENT
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LT7170RV-1#TRMPBF
Active20 A, 16 V, SINGLE- OR DUAL-PHASE, SILENT SWITCHER STEP-DOWN REGULATORS WITH DIGITAL POWER SYSTEM MANAGEMENT
Technical Specifications
Parameters and characteristics for this part
| Specification | LT7170RV-1#TRMPBF |
|---|---|
| Current - Output | 20 A |
| Frequency - Switching [Max] | 4 MHz |
| Frequency - Switching [Min] | 400 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Programmable |
| Package / Case | 24-PowerTFQFN |
| Supplier Device Package | 24-LQFN (3.5x4) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 16 V |
| Voltage - Input (Min) [Min] | 2.9 V |
| Voltage - Output (Max) [Max] | 5.5 V |
| Voltage - Output (Min/Fixed) | 0.4 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 19.20 | |
| 10 | $ 13.92 | |||
| 25 | $ 12.56 | |||
| 100 | $ 11.05 | |||
| 250 | $ 10.31 | |||
| Digi-Reel® | 1 | $ 19.20 | ||
| 10 | $ 13.92 | |||
| 25 | $ 12.56 | |||
| 100 | $ 11.05 | |||
| 250 | $ 10.31 | |||
| Tape & Reel (TR) | 500 | $ 9.94 | ||
Description
General part information
LT7170/LT7170-1 Series
The LT7170/LT7170-1 are monolithic DC/DC synchronous stepdown regulators that deliver up to 20 A of continuous output current. The LT7170-1 option has two switching phases that are connected to two inductors to drive a single-regulated output supply. The quick, clean, low-overshoot switching edges deliver high efficiency while minimizing electromagnetic interference (EMI) emissions. The I2C-based PMBus 1.3-compliant serial interface enables control of device functions while providing telemetry information for system monitoring. The LT7170/LT7170-1 are supported by the LTpowerPlay®graphical user interface (GUI) tool.The controlled on-time valley current-mode control with 25 ns typical minimum on-time enables a high switching frequency (fSW) at a low output voltage (VOUT) with excellent transient response in a small overall solution size.VOUT, fSW, and phase are selectable using external configuration resistors. Settings can also be set via the PMBus interface or stored in the on-chip, three times programmable nonvolatile memory (NVM).To guarantee clean start-up of the powered devices, the LT7170/ LT7170-1 actively pull down the output using VSENSEPwhen the output is disabled. The LT7170/LT7170-1 wait until the VOUTis less than 0.2 V before enabling the output and beginning a soft start. This VOUTdischarge threshold is programmable from 0.2 V to 2.2 V. The LT7170/LT7170-1 use forced-continuous switching operation.
Documents
Technical documentation and resources