Datasheet

5Maxim Integrated
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
MAX16962
4A, 2.2MHz, Synchronous Step-Down
DC-DC Converter
MAX16962
4A, 2.2MHz, Synchronous Step-Down
DC-DC Converter
EFFICIENCY vs. LOAD CURRENT (SKIP)
MAX16962 toc04
LOAD CURRENT (A)
EFFICIENCY (%)
1.00.10.010.0010
10
20
30
40
50
60
70
80
90
100
0
0.0001 10
V
IN
= 3.3V
V
OUT
= 2.5V
V
OUT
= 1.8V
V
OUT
= 1.2V
f
SW
= 2.2MHz, SKIP MODE
V
OUT
LOAD REGULATION (PWM)
MAX16962 toc05
I
LOAD
(A)
V
OUT
(V)
3.63.22.82.42.01.61.20.80.4
3.22
3.24
3.26
3.28
3.30
3.32
3.20
0 4.0
V
IN
= 5V
PWM MODE
T
A
= +25°C
T
A
= +125°C
T
A
= -40°C
V
OUT
LOAD REGULATION (SKIP)
MAX16962 toc06
I
LOAD
(A)
V
OUT
(V)
3.63.22.82.42.01.61.20.80.4
3.22
3.24
3.26
3.28
3.30
3.32
3.34
3.20
04
.0
V
IN
= 5V
SKIP MODE
T
A
= +25°C
T
A
= +125°C
T
A
= -40°C
V
OUT
vs. V
PV
(PWM)
MAX16962 toc07
V
PV
(V)
V
OUT
(V)
5.14.73.9 4.33.53.1
1.760
1.770
1.780
1.790
1.800
1.810
1.820
1.830
1.840
1.850
1.750
2.7 5.5
T
A
= +25°C
T
A
= -40°C
T
A
= +125°C
PWM MODE
I
LOAD
= 0A
I
PV
vs. V
PV
(SKIP)
MAX16962 toc08
V
PV
(V)
I
PV
(µA)
5.04.54.03.53.0
5
10
15
20
25
30
35
40
45
50
0
2.5 5.5
SKIP MODE
T
A
= +125°C
T
A
= +25°C
T
A
= -40°C
I
PV
vs. TEMPERATURE
MAX16962 toc09
TEMPERATURE (°C)
I
PV
(µA)
11095-25 -10 5 35 50 6520 80
16
18
20
22
24
26
28
30
14
-40 125
V
PV
= 5V
SKIP MODE
V
OUT
SET TO PRESET
VOLTAGE OF 0.8V
LOAD-TRANSIENT RESPONSE
IN PWM MODE
MAX16962 toc10
4A
0.5A
0A
100mV/div
V
OUT
AC-COUPLED
I
LOAD
100µs/div
f
SW
vs. TEMPERATURE
MAX16962 toc11
TEMPERATURE (°C)
f
SW
(MHz)
1109565 80-10 5 20 35 50-25
2.02
2.04
2.06
2.08
2.10
2.12
2.14
2.16
2.18
2.20
2.00
-40 125
V
IN
= 5V
PWM MODE
SHUTDOWN CURRENT vs. V
PV
MAX16962 toc12
V
PV
(V)
SHUTDOWN (nA)
5.04.54.03.53.0
0.01
0.1
1
10
100
1000
0.001
2.5 5.5
T
A
= -40°C
T
A
= +25°C
T
A
= +125°C