Datasheet

MAX16993 Step-Down Controller with
Dual 2.1MHz Step-Down DC-DC Converters
Maxim Integrated │ 7
www.maximintegrated.com
Typical Operating Characteristics (continued)
(V
SUP
= 14V, T
A
= +25°C, unless otherwise noted)
V
OUT3
vs. TEMPERATURE
MAX16993 toc17
TEMPERATURE (ºC)
V
OUT3
(V)
100500
1.785
1.790
1.795
1.800
1.805
1.810
1.780
-50 150
I
OUT3
= 1.125A
BUCK 3 LINE REGULATION (PWM MODE)
MAX16993 toc16
V
PV3
(V)
V
OUT3
(% NOMINAL)
5.34.84.33.8
99.6
99.7
99.8
99.9
100.0
100.1
100.2
100.3
100.4
100.5
99.5
3.3
V
OUT3
= 1.8V
T
A
= -40ºC
T
A
= +125ºC
T
A
= +25ºC
BUCK 3 LOAD REGULATION (PWM MODE)
MAX16993 toc15
I
OUT3
(A)
V
OUT3
(V)
3.02.50.5 1.0 1.5 2.0
1.216
1.218
1.220
1.222
1.224
1.226
1.228
1.230
1.214
0 3.5
V
PV3
= 5.0V
I
MAX
= 3A
V
OUT3
= 1.2V
BUCK 3 LOAD REGULATION (PWM MODE)
V
OUT3
(V)
1.78
1.79
1.80
1.81
1.82
1.83
MAX16993 toc14
I
OUT3
(A)
1.41.21.00.80.60.40.2
1.77
0 1.6
T
A
= +125ºC
T
A
= +25ºC
T
A
= -40ºC
V
PV3
= 5.0V, I
MAX
= 1.5A, V
OUT3
= 1.8V
BUCK 3 EFFICIENCY
MAX16993 toc13
I
OUT3
(A)
EFFICIENCY (%)
1.00E-021.00E-04
10
20
30
40
50
60
70
80
90
100
0
1.00E-06 1.00E+00
SKIP MODE
PWM MODE
f
SW
= 2.1MHz,
V
SUP
= 14V,
V
PV3
= 5.0V,
V
OUT3
= 1.8V
V
OUT2
vs. TEMPERATURE
MAX16993 toc12
TEMPERATURE (ºC)
V
OUT2
(V)
100500
3.105
3.110
3.115
3.120
3.125
3.130
3.135
3.140
3.145
3.150
3.100
-50 150
I
OUT2
= 1.125A
BUCK 2 LINE REGULATION (PWM MODE)
MAX16993 toc11
V
PV2
(V)
V
OUT2
(% NOMINAL)
5.24.74.23.73.2
99.2
99.4
99.6
99.8
100.0
100.2
100.4
100.6
100.8
101.0
99.0
2.7 5.7
V
OUT2
= 3.15V
T
A
= -40ºC
T
A
= +125ºC
T
A
= +25ºC
BUCK 2 LOAD REGULATION (PWM MODE)
MAX16993 toc10
I
OUT2
(A)
V
OUT2
(V)
3.02.52.01.51.00.5
3.315
3.320
3.325
3.330
3.335
3.340
3.345
3.310
0 3.5
V
PV2
= 5.0V
I
MAX
= 3A
V
OUT2
= 3.3V