Linear Technology DC1588A Demo Manual

DESCRIPTION
Demonstration circuit DC1588A features the LTM
a low input voltage 15A step-down power module. The
operating input voltage range is 1.5V to 5.5V with an out-
put voltage range from 0.8V to 5V. DC1588A can support
a load current up to 15A, while derating may be neces-
sary for different V , V
IN OUT
LTM4611EV can operate in pulse-skipping mode or Burst
Mode ® operation for high effi ciency under a light load. The
DC1588A has a default programmable switching frequency
of 500kHz and may be synchronized to an external clock
from 360kHz up to 710kHz. The TRACK/SS input allows
the output voltage to ramp up and ramp down; coinciden-
tally or ratiometrically with an external voltage. A remote
PERFORMANCE SUMMARY
PARAMETER
Input Voltage Range
Output Voltage V
OUT
Maximum Continuous Output Current
Default Operating Frequency
External Clock Synchronous Frequency Range
Effi ciency
BOARD PHOTO
4611EV,
®
and thermal conditions. The
(T = 25°C)
A
CONDITIONS
Selectable with Jumpers (Open for 0.8V)
Derating is Necessary for Certain Operating Conditions.
See Data Sheet for Details
V = 5V, V = 3.3V, I
IN OUT
DEMO MANUAL DC1588A
Ultralow V
IN
Power µModule
output voltage sense feature improves the output voltage
accuracy under high loads. These features and the avail-
ability of the LTM4611EV in a compact 15mm × 15mm
× 4.32mm LGA package make the demonstration circuit
ideal for use in many high density point-of-load regula-
tion applications. The LTM4611 data sheet must be read
in conjunction with this demo manual for working on or
modifying the demo circuit 1588A.
Design fi les for this circuit board are available at
http://www.linear.com/demo
L, LT, LTC, LTM, μModule, Burst Mode, Linear Technology and the Linear logo are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
= 15A
OUT
LTM4611EV:
15A Step-Down
Regulator
®
VALUE
1.5V to 5.5V
0.8V, 1.0V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V
15A DC
500kHz
360kHz to 710kHz
93%, See Figure 2
dc1588af
1