Typical operating characteristics – Rainbow Electronics MAX15058 User Manual
Page 4
High-Efficiency, 3A, Current-Mode
Synchronous, Step-Down Switching Regulator
MAX15058
4 ______________________________________________________________________________________
Typical Operating Characteristics
(V
IN
= 5V, V
OUT
= 1.8V, I
LOAD
= 3A, Circuit of Figure 5, T
A
= +25NC, unless otherwise noted.)
OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX15058 toc07
OUTPUT VOLTAGE (V)
1.89
1.87
1.85
1.83
1.81
1.79
1.77
1.75
OUTPUT CURRENT (A)
0
0.5
1.0
2.0
1.5
2.5
3.0
V
OUT
= 5V
V
OUT
= 3.3V
OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
MAX15058 toc06
OUTPUT VOLTAGE (V)
1.89
1.87
1.85
1.83
1.81
1.79
1.77
1.75
SUPPLY VOLTAGE (V)
2.7
3.2
3.7
4.7
4.2
5.2
I
OUT
= 0.5A
SWITCHING FREQUENCY
vs. INPUT VOLTAGE
MAX15058 toc05
INPUT VOLTAGE (V)
SWITCHING FREQUENCY (kHz)
920
940
960
980
1000
1020
1040
1060
1080
1100
900
2.7
3.2
3.7
4.7
4.2
5.2
EFFICIENCY vs. OUTPUT CURRENT
(SKIP MODE)
MAX15058 toc04
OUTPUT CURRENT (A)
EFFICIENCY (%)
2.5
2.0
1.5
1.0
0.5
80
85
90
95
100
75
0
3.0
V
IN
= 3.3V
V
OUT
= 1.8V
V
OUT
= 1.5V
V
OUT
= 1.2V
V
OUT
= 2.5V
EFFICIENCY vs. LOAD CURRENT
(SKIP MODE)
MAX15058 toc03
OUTPUT CURRENT (A)
EFFICIENCY (%)
2.5
2.0
1.5
1.0
0.5
80
85
90
95
100
70
75
0
3.0
V
IN
= 5V
V
OUT
= 1.8V
V
OUT
= 1.5V
V
OUT
= 1.2V
V
OUT
= 2.5V
V
OUT
= 3.3V
EFFICIENCY vs. OUTPUT CURRENT
(FORCED PWM)
MAX15058 toc02
OUTPUT CURRENT (A)
EFFICIENCY (%)
2.5
2.0
1.5
1.0
0.5
80
85
90
95
100
75
0
3.0
V
IN
= 3.3V
V
OUT
= 1.8V
V
OUT
= 1.5V
V
OUT
= 1.2V
V
OUT
= 2.5V
EFFICIENCY vs. LOAD CURRENT
(PWM MODE)
MAX15058 toc01
OUTPUT CURRENT (A)
EFFICIENCY (%)
2.5
2.0
1.5
1.0
0.5
80
85
90
95
100
75
0
3.0
V
OUT
= 3.3V
V
IN
= 5V
V
OUT
= 2.5V
V
OUT
= 1.8V
V
OUT
= 1.5V
V
OUT
= 1.2V