Features and Benefits
- Low Quiescent Current:
- 20µA in Active Mode
- <1µA in Shutdown Mode
- Operates with VIN as Low as 1V
- Low VCESAT Switch: 250mV at 300mA
- Uses Small Surface Mount Components
- High Output Voltage: Up to 34V
- Low Profile (1mm) ThinSOT™ Package
The LT1615/LT1615-1 are micropower step-up DC/DC converters in a 5-lead low profile (1mm) ThinSOT package. The LT1615 is designed for higher power systems with a 350mA current limit and an input voltage range of 1.2V to 15V, whereas the LT1615-1 is intended for lower power and single-cell applications with a 100mA current limit and an extended input voltage range of 1V to 15V. Otherwise, the two devices are functionally equivalent. Both devices feature a quiescent current of only 20µA at no load, which further reduces to 0.5µA in shutdown. A current limited, fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad range of load current. The 36V switch allows high voltage outputs up to 34V to be easily generated in a simple boost topology without the use of costly transformers. The LT1615’s low off-time of 400ns permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications.
- LCD Bias
- Handheld Computers
- Battery Backup
- Digital Cameras
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
R303 Reliability Data3/23/2018
DN232 - SOT-23 Switching Regulator with Integrated 1A Switch Delivers High Current Outputs in a Small Footprint3/26/2014
Design Note 231: Tiny Regulators Drive White LED Backlights5/1/2000
Design Note 223: SOT-23 DC/DC Converters Generate Up to ±35V Outputs and Consume Only 20µA of Quiescent Current2/1/2000
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.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Models for the following parts are available in LTspice:
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|
|LT1615ES5#TRMPBF||Material Declaration||Reliability Data||5-Lead TSOT-23|
|LT1615ES5#TRPBF||Material Declaration||Reliability Data||5-Lead TSOT-23|
|LT1615ES5-1#TRMPBF||Material Declaration||Reliability Data||5-Lead TSOT-23|
|LT1615ES5-1#TRPBF||Material Declaration||Reliability Data||5-Lead TSOT-23|
|LT1615IS5#TRMPBF||Material Declaration||Reliability Data||5-Lead TSOT-23|
|LT1615IS5#TRPBF||Material Declaration||Reliability Data||5-Lead TSOT-23|
|LT1615IS5-1#TRMPBF||Material Declaration||Reliability Data||5-Lead TSOT-23|
|LT1615IS5-1#TRPBF||Material Declaration||Reliability Data||5-Lead TSOT-23|
|Wafer Fabrication Data||R303 Reliability Data|
Sample & Buy
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Buy Now Pricing
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