LT3663 - 1.2A Step-Down Switching Regulator with Output Current Limit
Datasheet Documentation
Datasheet
Reliability Data
LT Journal
Press Release
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Overview

Features

Typical Application

LT3663 Typical Application
LT3663 Typical Application

Description

The LT3663 is a current mode step-down switching regulator with programmable output current limit. The current limit accurately controls the system power dissipation and reduces the size of the power path components.

The wide operating input voltage range of 7.5V to 36V (60V transient) suits the LT3663 to a variety of input sources, including unregulated 12V wall adapters, 24V industrial supplies, and automotive power.

The LT3663 includes a low current shutdown mode, input overvoltage and undervoltage lockout, and thermal shutdown. Internal compensation and boost diode minimize the number of external exponents. 3.3V and 5V fixed output voltage versions are available.

The LT3663 is available in 8-lead DFN and MSOP packages with exposed pads for low thermal resistance.

Packaging

2x3 DFN-8,MS-8

LT3663 Package Drawing
LT3663 Package Drawing
LT3663 Package Drawing
LT3663 Package Drawing
Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price
(1-99)		 Price
(1k)*
LT3663EDCB#PBF DFN 8 E $3.57
LT3663EDCB#TRMPBF DFN 8 E $3.57 $2.55
LT3663EDCB#TRPBF DFN 8 E $3.57 $2.50
LT3663EDCB-3.3#PBF DFN 6 E $3.57
LT3663EMS8E#PBF MSOP 8 E $3.71 $2.60
LT3663EMS8E#TRPBF MSOP 8 E $2.66
LT3663EMS8E-3.3#PBF MSOP 8 E $3.71 $2.60
LT3663EMS8E-3.3#TRPBF MSOP 8 E $2.66
LT3663EMS8E-5#PBF MSOP 8 E $3.71 $2.60
LT3663EMS8E-5#TRPBF MSOP 8 E $2.66
LT3663HMS8E#PBF MSOP 8 H $4.73 $3.31
LT3663HMS8E#TRPBF MSOP 8 H $3.37
LT3663HMS8E-3.3#PBF MSOP 8 H $4.73 $3.31
LT3663HMS8E-3.3#TRPBF MSOP 8 H $3.37
LT3663HMS8E-5#PBF MSOP 8 H $4.73 $3.31
LT3663HMS8E-5#TRPBF MSOP 8 H $3.37
LT3663IDCB#PBF DFN 8 I $4.20
LT3663IDCB#TRMPBF DFN 8 I $4.20 $2.99
LT3663IDCB#TRPBF DFN 8 I $4.20 $2.94
LT3663IMS8E#PBF MSOP 8 I $4.37 $3.06
LT3663IMS8E#TRPBF MSOP 8 I $3.12
LT3663IMS8E-3.3#PBF MSOP 8 I $4.37 $3.06
LT3663IMS8E-3.3#TRPBF MSOP 8 I $3.12
LT3663IMS8E-5#PBF MSOP 8 I $4.37 $3.06
LT3663IMS8E-5#TRPBF MSOP 8 I $3.12
LT3663EDCB-3.3#TRMPBF DFN 6 E $3.57 $2.55
LT3663EDCB-3.3#TRPBF DFN 6 E $3.57 $2.50
* 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
DC1419A LT3663EDCB DEMO BOARD | Adj Current Limit, 7.5V ≤ VIN ≤ 36/60V, Vout = 3.3V or 5V @ 0.6A to 1.2A $75.00
DC1570A-A LT3663EDCB-3.3 Demo Board | Adj Current Limit, 7.5V ≤ VIN ≤ 36/60V, Vout = 3.3V @ 0.6A to 1.2A $75.00
DC1570A-B LT3663EDCB-5 Demo Board | Adj Current Limit, 7.5V ≤ VIN ≤ 36/60V, Vout = 5V @ 0.6A to 1.2A $75.00