LT1618
LT1618
PRODUCTIONConstant-Current/Constant-Voltage 1.4MHz Step-Up DC/DC Converter
- Part Models
- 4
- 1ku List Price
- Starting From $2.70
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Overview
- Accurate Input/Output Current Control: ±5% Over Temperature
- Accurate Output Voltage Control: ±1%
- Wide VIN Range: 1.6V to 18V
- 1.4MHz Switching Frequency
- High Output Voltage: Up to 35V
- Low VCESAT Switch: 200mV at 1A
- Available in (3mm x 3mm x 0.8mm) 10-Pin DFN and 10-Pin MSOP Packages
The LT1618 step-up DC/DC converter combines a traditional voltage feedback loop and a unique current feedback loop to operate as a constant-current, constant-voltage source. This fixed frequency, current mode switcher operates from a wide input voltage range of 1.6V to 18V, and the high switching frequency of 1.4MHz permits the use of tiny, low profile inductors and capacitors. The current sense voltage is set at 50mV and can be adjusted using the IADJ pin.
Available in the 10-Pin (3mm x 3mm) Exposed Pad DFN and 10-pin MSOP packages, the LT1618 provides a complete solution for constant-current applications.
Applications
- LED Backlight Drivers
- USB Powered Boost/SEPIC Converters
- Input Current Limited Boost/SEPIC Converters
- Battery Chargers
Documentation
Data Sheet 1
User Guide 1
Design Note 4
Technical Articles 1
Brochure 2
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 |
|---|---|---|---|
| LT1618EDD#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LT1618EDD#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LT1618EMS#PBF | 10-Lead MSOP | ||
| LT1618EMS#TRPBF | 10-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LT1618EMS#PBF | PRODUCTION | |
| LT1618EMS#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT1618EMS#PBF | PRODUCTION | |
| LT1618EMS#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT1618
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.
Evaluation Kits
LT1618 Demo Board | CC/CV Boost, 3.3V ≤ VIN ≤ 4.2V, VOUT = 12V@250mA(CV) or 3.5V@500mA(CC)