DC1041A-A【PDF 1/6 页】BOARD EVAL LTM4601

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DEMO MANUAL DC1041A-A

LTM4601

5V IN to 20V IN , 12A Step-Down

μModule Regulator

DESCRIPTION

Demonstration circuit DC1041A-A features the

LTM ? 4601EV, a 12A high efficiency, high density switch

mode step-down converter. The input voltage range is

from 4.5V to 20V. The output voltage is jumper select-

able for popular voltages from 0.6V to 5V. The PLLIN

pin supports synchronizing the μModule ? regulator to

an external clock. The TRACK/SS pin allows the user to

program output ramp-up and ramp-down rates which

may coincidentally or ratiometrically track with another

supply’s output if desired. Output voltage margining of

±5% from the nominal value is available via the margin

control pins MARG0 and MARG1. The LTM4601 data sheet

must be read in conjunction with this demo manual prior

to working on or modifying demo circuit DC1041A-A.

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 Synchronous Clock Frequency Range

Efficiency

CONDITION

Jumper Selectable (Open for 0.6V)

Derating is Necessary for Certain V IN , V OUT and

Thermal Conditions

Refer to Data Sheet for Details

V IN = 12V, V OUT = 1.5V, I OUT = 12A

VALUE

4.5V to 20V

1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V

12A DC

850kHz

600kHz to 1000kHz

83%, See Figure 2

BOARD PHOTO

dc1041a-af

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