LT1615
PRODUCTIONMicropower Step-Up DC/DC Converters in ThinSOT
- Part Models
- 8
- 1ku List Price
- Starting From $2.81
Overview
- 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.
Applications
- LCD Bias
- Handheld Computers
- Battery Backup
- Digital Cameras
Documentation
Data Sheet 1
Design Note 3
Technical Articles 2
Brochure 1
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT1615ES5#TRMPBF | 5-Lead TSOT-23 | ||
| LT1615ES5#TRPBF | 5-Lead TSOT-23 | ||
| LT1615ES5-1#TRMPBF | 5-Lead TSOT-23 | ||
| LT1615ES5-1#TRPBF | 5-Lead TSOT-23 | ||
| LT1615IS5#TRMPBF | 5-Lead TSOT-23 | ||
| LT1615IS5#TRPBF | 5-Lead TSOT-23 | ||
| LT1615IS5-1#TRMPBF | 5-Lead TSOT-23 | ||
| LT1615IS5-1#TRPBF | 5-Lead TSOT-23 |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice 3
- LT1615-1 Demo Circuit - µPower Step-Up Converter (1-1.5V to 3.3V @ 15mA)
- LT1615 Demo Circuit - µPower SEPIC Converter (2.5-4.2V to 3.3V @ 50mA)
- LT1615 Demo Circuit - µPower Step-Up Converter (2.5-4.2V to 20V @ 12mA)
Models for the following parts are available in LTspice:
- LT1615
- LT1615-1
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.