LT1618 - Constant-Current/Constant-Voltage 1.4MHz Step-Up DC/DC Converter
Datasheet Documentation
Datasheet
Design Note
Reliability Data
LT Journal
cad_symbol
ltspice
Overview

Features

Typical Application

LT1618 Typical Application
LT1618 Typical Application

Description

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.

Packaging

3x3 DFN-10,MS-10

LT1618 Package Drawing
LT1618 Package Drawing
Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price
(1-99)		 Price
(1k)*
LT1618EDD#PBF DFN 10 E $2.08 $1.75
LT1618EDD#TRPBF DFN 10 E $1.85
LT1618EMS#PBF MSOP 10 E $2.08 $1.75
LT1618EMS#TRPBF MSOP 10 E $1.81
LT1618EMS MSOP 10 E $4.16 $3.50
LT1618EMS#TR MSOP 10 E $3.62
LT1618EDD DFN 10 E $4.16 $3.50
LT1618EDD#TR DFN 10 E $3.70
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.


Part Number Description Price Documentation
DC780B LT1618 Demo Board | CC/CV Boost, 3.3V ≤ VIN ≤ 4.2V, Vout = 12V@250mA(CV) or 3.5V@500mA(CC) $100.00