Features and Benefits
- Flexible Power Supply Tracking
- Tracks Both Up and Down
- Power Supply Sequencing
- Supply Stability is Not Affected
- Low Pin Count
- Controls Single Supply without Series FETs
- Adjustable Ramp Rate
- Available in 8-Lead ThinSOT™ and 8-Lead (3mm × 2mm) DFN Packages
The LTC2927 provides a simple solution to power supply tracking and sequencing requirements. By selecting a few resistors, the supply can be configured to ramp-up and ramp-down with differing ramp rates, voltage offsets, or time delays relative to other supplies or a master signal.
By forcing current into a feedback node of an independent supply, the LTC2927 causes the output to track a ramp signal without inserting any pass element losses. Because the current is controlled in an open-loop manner, the LTC2927 does not affect the transient response or stability of the supply. The compact solution at point of load minimizes the trace length of the DC/DC circuit sensitive FB node. Furthermore, it presents a high impedance when power-up is complete, effectively removing it from the DC/DC circuit.
- VCORE and VI/O Supply Tracking
- Microprocessor, DSP and FPGA Supplies
- Multiple Supply Systems
- Point-of-Load Supplies
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation & Resources
R413 Reliability Data3/26/2018
DC817A - Demo Manual9/24/2009
MOSFETs Make Sense for Tracking and Sequencing Power Supplies3/1/2006 LT Journal
Supply Tracking and Sequencing at Point-of-Load: Easy Design without the Drawbacks of MOSFETs9/1/2005 LT Journal
Tools & Simulations
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
LTC2927 Companion Parts
Recommended Related Parts
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
|Part Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|LTC2927CDDB#TRMPBF||Material Declaration||Reliability Data||8-Lead DFN (3mm x 2mm w/ EP)|
|LTC2927CDDB#TRPBF||Material Declaration||Reliability Data||8-Lead DFN (3mm x 2mm w/ EP)|
|LTC2927CTS8#TRMPBF||Material Declaration||Reliability Data||8-Lead SOT-23|
|LTC2927CTS8#TRPBF||Material Declaration||Reliability Data||8-Lead SOT-23|
|LTC2927IDDB#TRMPBF||Material Declaration||Reliability Data||8-Lead DFN (3mm x 2mm w/ EP)|
|LTC2927IDDB#TRPBF||Material Declaration||Reliability Data||8-Lead DFN (3mm x 2mm w/ EP)|
|LTC2927ITS8#TRMPBF||Material Declaration||Reliability Data||8-Lead SOT-23|
|LTC2927ITS8#TRPBF||Material Declaration||Reliability Data||8-Lead SOT-23|
|Wafer Fabrication Data||R413 Reliability Data|
Sample & Buy
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.