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DEMO MANUAL DC1392A
LTM4604A
2.375V IN(MIN) , 4A Step-Down
μModule Regulator
DESCRIPTION
Demonstration circuit 1392A features the LTM ? 4604AEV,
the high efficiency, high density switch mode step-down
μModule ? regulator. The input voltage range is from 2.375V
to 5.5V with a jumper selectable output voltage from 0.8V
to 3.3V. The rated load current is 4A, while derating is
necessary for certain V IN , V OUT and thermal conditions.
By using the TRACK pin, the output can be set to coin-
cidentally or ratiometrically track to another voltage rail.
The LTM4604A data sheet must be read in conjunction
with this demo manual prior to working on or modifying
demo circuit DC1392A.
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
Efficiency
CONDITION
Jumper Selectable (Open for 0.8V)
Derating is Necessary for Certain V IN , V OUT and
Thermal Conditions
V IN = 5V, V OUT = 3.3V, I OUT = 4A
VALUE
2.375V to 5.5V
1.2V, 1.5V, 1.8V, 2.5V, 3.3V; ±2%
4A DC
1.25MHz
88% Typical, See Figure 3
BOARD PHOTO
dc1392af
1
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