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dc2453afb

DEMO MANUAL DC2453A

Description

LTM4643EV

Quad DC/DC µModule Regulator

with Configurable 3A Output Array

Demonstration circuit 2453A features the LTM®4643

4 output step-down regulator. The LTM4643EV has an

operating input voltage range of 4V to 20V and is able

to provide up to 3A out output current from each of its

phases. Each output’s voltage is programmable from 0.6V

to3.3V.TheLTM4643EVisacompleteDC/DCpointofload

regulatorinathermallyenhanced15mm×9mm × 1.82mm

LGA package requiring only a few input and output ca-

pacitors. Output voltage tracking is available through the

L

, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of

Linear Technology Corporation. All other trademarks are the property of their respective owners.

BoarD photo

TRACK/SS pin for supply rail sequencing. External clock

synchronization is also available through the CLKIN pin.

TheCLKOUTpinprovidesforsynchronizationofadditional

modules’ phases. The LTM4643 data sheet must be read

in conjunction with this demo manual for working on or

modifying demo circuit 2453A.

Design files for this circuit board are available at

http://www.linear.com/demo/DC2453A

Figure 1. Quad 3A LTM4643; DC2453A