LTC3613 - 24V, 15A Monolithic Step Down Regulator with Differential Output Sensing
- Wide VIN Range: 4.5V to 24V; VOUT Range: 0.6V to 5.5V at up to 15A
- 0.67% Output Voltage Accuracy
- Controlled On-Time Valley Current Mode Architecture, Excellent Current Sharing Capability
- Frequency Programmable from 200kHz to 1MHz and Synchronizable to External Clock
- RSENSE or Inductor DCR Current Sensing With Accurate Current Limit
- Fast Transient Response
- Differential Output Voltage Sensing Allowing 500mV Common Mode Remote Ground
- tON(MIN) = 65ns; tOFF(MIN) = 105ns
- Overvoltage Protection and Current Limit Foldback
- Power Good Output Voltage Monitor
- Voltage Tracking Start-Up
- External VCC Input for Bypassing Internal LDO
- Micropower Shutdown: IQ = 15μA
- 7mm × 9mm 56-pin QFN Package
AEC-Q100 data available for specific packages
The LTC®3613 is a monolithic synchronous step-down switching regulator capable of regulating outputs from 0.6V to 5.5V with up to 15A output current. The controlled on-time constant frequency valley current mode architecture allows for both fast transient response and constant frequency switching in steady-state operation, independent of VIN, VOUT and load. This also provides excellent current sharing capability.
Differential output voltage sensing along with a precision internal reference combine to offer ±0.67% output regulation, even if the output ground reference deviates from local ground by 500mV. The switching frequency can be programmed from 200kHz to 1MHz with an external resistor. The switching frequency is also phase synchronizable to an external clock in applications where switching noise/ EMI reduction is crucial.
Very low tON and tOFF times allow for near 0% and near 100% duty cycles, respectively. Voltage tracking soft start-up is provided for tracking and sequencing applications. Safety features include output overvoltage protection, programmable current limit with foldback, and power good monitoring.
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
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Demo BoardsLinear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.
|DC1700A||LTC3613EWKH Demo Board | VIN = 4.5V to 24V, VOUT =1.5V@ 15A||$150.00|
Designed for Automotive and Transportation ApplicationsAEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page
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- Distributed Power System
- Point-of-Load Converters
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