Datasheet

EFFICIENCY vs. LOAD CURRENT
(5V VERSION)
MAX16903 toc01
I
LOAD
(A)
EFFICIENCY (%)
0.10.010.0010.0001
10
20
30
40
50
60
70
80
90
100
0
0.00001 1
SKIP MODE
FFF MODE
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (SKIP MODE)
MAX16903 toc02
INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
2624222018161412108
10
20
30
40
50
60
0
628
5V PART
3.3V PART
LINE REGULATION
(I
LOAD
= 1A)
MAX16903 toc03
INPUT VOLTAGE (V)
OUTPUT-VOLTAGE CHANGE (%)
26248 10 12 16 18 2014 22
-3
-2
-1
0
1
2
3
4
-4
628
LOAD REGULATION
MAX16903 toc04
LOAD CURRENT (A)
OUTPUT-VOLTAGE CHANGE (%)
0.80.60.2 0.4
-3
-2
-1
0
2
1
3
4
-4
0 1.0
SKIP MODE
FFF MODE
SHUTDOWN SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX16903 toc05
INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
2624222018161412108
3
6
9
12
15
0
628
STARTUP WAVEFORM (I
LOAD
= 1A)
MAX16903 toc06
I
INDUCTOR
1A/div
PGOOD
5V/div
V
OUT
5V/div
EN
5V/div
1ms/div
SHUTDOWN WAVEFORM (I
LOAD
= 1A)
MAX16903 toc07
I
INDUCTOR
1A/div
PGOOD
5V/div
V
OUT
5V/div
EN
5V/div
20µs/div
LOAD-TRANSIENT RESPONSE
(FIXED MODE)
MAX16903 toc08
I
LOAD
1A/div
PGOOD
5V/div
V
OUT
200mV/div
5V
5V
AC
COUPLED
200µs/div
I
LOAD
= 100mA TO 1A TO 100mA
Typical Operating Characteristics
(V
SUP
= +14V, T
A
= +25°C, unless otherwise noted.)
MAX16903
2.1MHz, High-Voltage, 1A Mini-Buck Converter
5
Maxim Integrated