1
dc1889af
DEMO MANUAL DC1889A
Description
LTM4624EY
4A Step-Down µModule
Regulator
Demonstration circuit 1889A features the
LTM
®
4624EY
µModule
®
regulator, a tiny high performance high
efficiency step-down regulator. The LTM4624EY has an
operating input voltage range of 4V to 14V and is able to
provide an output current of up to 4A. The output voltage
is programmable from 0.6V to 5.5V. The LTM4624EY is
a complete DC/DC point-of-load regulator in a thermally
enhanced 6.25mm
×
6.25mm
×
5.01mm BGA package
requiring only a couple capacitors and a resistor. Output
L
, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
performance summary
BoarD photo
voltage tracking is available through the TRACK/SS pin for
supply rail sequencing. The LTM4624 data sheet must be
read in conjunction with this demo manual prior to working
on or modifying demo circuit 1889A.
Design files for this circuit board are available at
http://www.linear.com/demo
Specifications are at T
A
= 25°C
PARAMETER
CONDITIONS/NOTES
VALUE
Input Voltage Range
4V – 14V
Output Voltage, V
OUT
Jumper Selectable
1.0V
DC
, 1.2V
DC
, 1.5V
DC
, 1.8V
DC
, 2.5V
DC
, 3.3V
DC
,
5V
DC
Maximum Continuous Output Current
Derating is Necessary for Certain operating
Conditions. See Data Sheet for Details
4A DC
Default Operating Frequency
1MHz
Efficiency
V
IN
= 12V, V
OUT
= 1.8V, I
OUT
= 4A
83.6% See Figure 2
Downloaded from
