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DEMO MANUAL DC1083A-B
LTM4603HV
Synchronizable 28V, 6A
Step-Down μModule Regulator
DESCRIPTION
Demonstration circuit DC1083A-B features the
LTM ? 4603HV, the high efficiency, high density step-down
μModule ? regulator. The input voltage range is from 4.5V
to 28V. The output voltage is jumper programmable from
0.6V to 5V. The rated load current is 6A, while derating is
necessary for certain V IN , V OUT , and thermal conditions.
Applying an external clock signal to the PLLIN pin forces
the μModule regulator to operate at the same frequency.
The output ramp-up and ramp-down may be programmed
through the TRACK/SS pin. Margining function is provided
for the user who wants to stress their system by varying
supply voltages during testing. The LTM4603HV data sheet
must be read in conjunction with this demo manual prior
to working on or modifying demo circuit DC1083A-B.
Design files for this circuit board are available at
http://www.linear.com/demo
L , LT, LTC, LTM, μModule, Linear Technology and the Linear logo are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
PERFORMANCE SUMMARY
(T A = 25°C)
PARAMETER
Input Voltage Range
Output Voltage V OUT
Maximum Continuous Output Current
Default Operating Frequency
External Clock Frequency Range
CONDITION
Jumper Selectable (Open for 0.6V)
Derating is Necessary for Certain V IN , V OUT , and Thermal Conditions
Refer to Data Sheet for Minimum t ON and t OFF Requirement
VALUE
4.5V to 28V
1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V; ± 2%
6A DC
1MHz
700kHz to 1.3MHz
BOARD PHOTO
dc1083abf
1
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