1
dc1385af
DEMO MANUAL DC1385A
DESCRIPTION
LTM4614EV: Dual 4A
Step-Down µModule
®
Regulator
Demonstration circuit DC1385A features the LTM
®
4614EV,
the high efficiency, high density power module with dual 4A
switch mode outputs. Derating is necessary for certain V
IN
,
V
OUT
, and thermal conditions. In the default configuration,
the two outputs share the same input supply, however each
regulator may have its own input supply simply by remov-
ing a resistor. By enabling the tracking feature, the outputs
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
BOARD PHOTO
coincidentally follow another supply rail. The LTM4614 data
sheet must be read in conjunction with this demo board
prior to working on or modifying demo circuit DC1477A.
Design files for this circuit board are available at
http://www.linear.com/demo
(T
A
= 25°C)
PARAMETER
CONDITIONS
VALUE
Input Voltage Range
V
IN1
and V
IN2
2.375V to 5.5V
Output Voltage V
OUT1
, V
OUT2
V
IN
= 5V
DC
,
I
OUT1
, I
OUT2
= 4A.
V
OUT1
= 1.8V ±2%,
V
OUT2
= 1.2V ±2%
Maximum Continuous Output Current
Derating is Necessary for Certain V
IN
, V
OUT
, and Thermal
Conditions, See Data Sheet for Details
4A
DC
for V
OUT1
, V
OUT2
Default Operating Frequency
1.25MHz
Efficiency of Channel 1
V
IN1
= 5V, V
OUT1
= 1.8V, I
OUT1
= 4A
81.5%, See Figure 3
Efficiency of Channel 2
V
IN2
= 5V, V
OUT2
= 1.2V, I
OUT2
= 4A
75.4%, See Figure 3
