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Description
Demonstration circuit 2453A features the
µModule
regulator, a high performance high efficiency
®
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
to 3.3V. The LTM4643EV is a complete DC/DC point of load
regulator in a thermally enhanced 15mm × 9mm × 1.82mm
LGA package requiring only a few input and output ca-
pacitors. Output voltage tracking is available through the
BoarD photo
DEMO MANUAL DC2453A
Quad DC/DC µModule Regulator
with Configurable 3A Output Array
LTM
4643
TRACK/SS pin for supply rail sequencing. External clock
®
synchronization is also available through the CLKIN pin.
The CLKOUT pin provides for synchronization of additional
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
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.
Figure 1. Quad 3A LTM4643; DC2453A
LTM4643EV
dc2453afb
1
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Table of Contents
Related Manuals for Linear Technology DC2453A
Summary of Contents for Linear Technology DC2453A
- Page 1 LGA package requiring only a few input and output ca- L, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of pacitors. Output voltage tracking is available through the Linear Technology Corporation. All other trademarks are the property of their respective owners.
-
Page 2: Performance Summary
DEMO MANUAL DC2453A performance summary PARAMETER CONDITIONS/NOTES VALUE Input Voltage Range 4V – 20V Output Voltage V Jumper Selectable = 3.3VDC, V = 2.5VDC, V OUT1 OUT2 OUT3 1.5VDC, V = 1.2VDC OUT4 Maximum Continuous Output Current per Phase Derating is Necessary for Certain Operating 3ADC Conditions. - Page 3 DEMO MANUAL DC2453A Quick start proceDure Figure 2. Test Setup of DC2453A dc2453afb...
- Page 4 DEMO MANUAL DC2453A Quick start proceDure 3.3V 3.3V OUT1 OUT1 2.5V 2.5V OUT2 OUT2 1.5V 1.5V OUT3 OUT3 1.2V 1.2V OUT4 OUT4 OUTPUT CURRENT (A) OUTPUT CURRENT (A) dc2453a F02a dc2453a F02b Figure 2. Measured Supply Efficiency at 5V and 12V...
- Page 5 DEMO MANUAL DC2453A Quick start proceDure AIRFLOW AMBIENT (°C) Natural Convection Figure 4. Measured Thermal Capture with All Phases at Full Load (3A) dc2453afb...
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Page 6: Parts List
DEMO MANUAL DC2453A parts List ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components C1, C3 CAP , CER, 22μF, 25V, X5R, 20%, 1206 MURATA, GRM31CR61E226ME15L CAP , X5R, 1μF, 16V 10%, 0603 AVX, 0603YD105KAT2A C9, C17 ,C28, C36 CAP , CER, 47μF, 6.3V, X5R, 20%,1210... -
Page 7: Schematic Diagram
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. - Page 8 Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods.
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