Datasheet

5Maxim Integrated
High-Efficiency, 4A, Step-Down DC-DC
Regulators with Internal Power Switches
MAX15066/MAX15166
Typical Operating Characteristics (continued)
(V
IN
= 12V, V
OUT
= 1.8V, C
VDD
= 1FF, C
IN
= 22FF, C
OUT
= 47FF, T
A
= +25NC (Figure 1, MAX15066), unless otherwise noted.)
LOAD REGULATION
MAX15066 toc11
OUTPUT CHANGE (%)
3.53.02.52.01.51.00.5
0.1
0.2
0.3
0.4
0.5
0.6
0
0 4.0
I
LOAD
(A)
LOAD-TRANSIENT RESPONSE
(MAX15166)
MAX15066 toc10
40µs/div
V
IN
= 12V
V
OUT
= 0.9V
dl/dt = 1A/µs
C
OUT
= 4 x 47µF
(SEE FIGURE 2 FOR
OTHER VALUES)
EFFICIENCY (12V) vs. OUTPUT CURRENT
(MAX15166)
MAX15066 toc09
OUTPUT CURRENT (A)
EFFICIENACY (%)
321
70
80
90
100
60
04
V
IN
= 12.0V
V
OUT
= 0.9V
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
V
OUT
= 1.2V
EFFICIENCY (5V) vs. OUTPUT CURRENT
(MAX15166)
MAX15066 toc08
OUTPUT CURRENT (A)
EFFICIENACY (%)
321
70
80
90
100
60
04
V
OUT
= 3.3V
V
IN
= 5.0V
V
OUT
= 2.5V
V
OUT
= 1.8V
V
OUT
= 0.9V
V
OUT
= 1.2V
MAX15066 toc07
V
OUT
100mV/div
AC-COUPLED
I
OUT
2A/div
100µs/div
LOAD-TRANSIENT RESPONSE
(MAX15066)
MAX15066 toc06
V
OUT
100mV/div
AC-COUPLED
I
OUT
2A/div
0A
100µs/div
LOAD-TRANSIENT RESPONSE
(MAX15066)