LT1618
Info: : PRODUCTION
searchIcon
cartIcon

LT1618

Constant-Current/Constant-Voltage 1.4MHz Step-Up DC/DC Converter

Show More showmore-icon

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $2.13
Features
  • 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
Additional Details
show more Icon

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
Part Models 4
1ku List Price Starting From $2.13

close icon
Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT1618EDD#PBF
  • HTML
  • HTML
LT1618EDD#TRPBF
  • HTML
  • HTML
LT1618EMS#PBF
  • HTML
  • HTML
LT1618EMS#TRPBF
  • HTML
  • HTML

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

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

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 4, 2020

- 20_0130

arrow down

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LT1618EMS#PBF

PRODUCTION

LT1618EMS#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC780B

LT1618 Demo Board | CC/CV Boost, 3.3V ≤ VIN ≤ 4.2V, VOUT = 12V@250mA(CV) or 3.5V@500mA(CC)

zoom

DC780B

LT1618 Demo Board | CC/CV Boost, 3.3V ≤ VIN ≤ 4.2V, VOUT = 12V@250mA(CV) or 3.5V@500mA(CC)

LT1618 Demo Board | CC/CV Boost, 3.3V ≤ VIN ≤ 4.2V, VOUT = 12V@250mA(CV) or 3.5V@500mA(CC)

Product Detail

Demonstration circuit 780B is a Constant-Current Constant- Voltage 1.4MHz Step-up DC/DC Converter featuring the LT1618. DC780B demonstrates a general purpose Boost converter with a 12V, 250mA output from a 3.3V-4.2V source.


The demo board can also be used as an LED driver, where a Luxeon LED (not installed), is driven with a regulated current of 500mA (default current), at a forward voltage of 3.5V. By changing the value or R4 to 2.2M the LED current can be regulated at 250mA.


The LT1618 can be used for wider input voltages, but output voltage level and component selection restrict this demo circuit to Lithium Ion battery input levels.

Tools & Simulations

Tools & Simulations 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.

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.

Recently Viewed