1
dc1392af
DEMO MANUAL DC1392A
DESCRIPTION
LTM4604A
2.375V
IN(MIN)
, 4A Step-Down
µModule Regulator
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.
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.
BOARD PHOTO
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
PERFORMANCE SUMMARY
(T
A
= 25°C)
PARAMETER
CONDITION
VALUE
Input Voltage Range
2.375V to 5.5V
Output Voltage, V
OUT
Jumper Selectable (Open for 0.8V)
1.2V, 1.5V, 1.8V, 2.5V, 3.3V; ±2%
Maximum Continuous Output Current
Derating is Necessary for Certain V
IN
, V
OUT
and
Thermal Conditions
4A DC
Default Operating Frequency
1.25MHz
Efficiency V
IN
= 5V, V
OUT
= 3.3V, I
OUT
= 4A
88% Typical, See Figure 3
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