Datasheet

4 Maxim Integrated
High-Efficiency, 4A, Step-Down DC-DC
Regulators with Internal Power Switches
MAX15066/MAX15166
Typical Operating Characteristics
(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.)
Note 4:
Specifications are 100% production tested at T
A
= +25NC. Limits over the operating temperature range are guaranteed by
design and characterization.
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 12V, C
VDD
= 1FF, C
IN
= 22FF, T
A
= T
J
= -40NC to +85NC, typical values are at T
A
= T
J
= +25NC, unless otherwise noted.)
(Note 4)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
HICCUP PROTECTION
Blanking Time
21 x
Soft-Start
Time
THERMAL SHUTDOWN
Thermal Shutdown Threshold Rising 160
NC
Thermal Shutdown Hysteresis 20
NC
EFFICIENCY vs. LOAD CURRENT
(MAX15066)
MAX15066 toc01
I
LOAD
(A)
EFFICIENCY (%)
0.4
0.30.20.1
50
60
70
80
90
100
40
0 0.5
V
OUT
= 1.2V
V
OUT
= 1.8V
V
OUT
= 5.0V
V
OUT
= 3.3V
V
OUT
= 2.5V
MAX15066 toc02
60
70
80
90
100
50
EFFICIENCY vs. LOAD CURRENT
(MAX15066)
EFFICIENCY (%)
I
LOAD
(A)
3.53.02.52.01.51.00.5 4.0
V
OUT
= 3.3V
V
OUT
= 2.5V
V
OUT
= 1.8V
V
OUT
= 5.0V
V
OUT
= 1.2V
0.80.60.40.20 1.0
MAX15066 toc03
EFFICIENCY vs. LOAD CURRENT
(MAX15066)
EFFICIENCY (%)
60
70
80
90
100
50
I
LOAD
(A)
V
OUT
= 1.2V
V
OUT
= 1.8V
V
OUT
= 2.5V
V
IN
= 5V
V
OUT
= 3.3V
EFFICIENCY vs. LOAD CURRENT
(MAX15066)
MAX15066 toc04
I
LOAD
(A)
EFFICIENCY (%)
3.53.02.52.01.51.0
75
80
85
90
95
100
70
0.5 4.0
V
OUT
= 3.3V
V
OUT
= 2.5V
V
OUT
= 1.8V
V
OUT
= 1.2V
V
IN
= 5V
MAX15066 toc05
V
OUT
100mV/div
AC-COUPLED
I
LOAD
1A/div
0A
100µs/div
LOAD-TRANSIENT RESPONSE
(MAX15066)