Rainbow-electronics MAX1745 Bedienungsanleitung Seite 5

  • Herunterladen
  • Zu meinen Handbüchern hinzufügen
  • Drucken
  • Seite
    / 14
  • Inhaltsverzeichnis
  • LESEZEICHEN
  • Bewertet. / 5. Basierend auf Kundenbewertungen
Seitenansicht 4
MAX1744/MAX1745
High-Voltage, Step-Down DC-DC
Controller in µMAX
_______________________________________________________________________________________ 5
100
0
0.0001 0.001 0.01 0.1 1 10
EFFICIENCY vs. LOAD CURRENT
(V
OUT
= +3.3V)
20
MAX1744/5toc01
LOAD CURRENT (A)
EFFICIENCY (%)
40
60
80
A: V
IN
= +5.5V
B: V
IN
= +12.0V
C: V
IN
= +24.0V
D: V
IN
= +36.0V
C
D
B
A
100
0
0.0001 0.001 0.01 0.1 1 10
EFFICIENCY vs. LOAD CURRENT
(V
OUT
= +5.0V)
20
MAX1744/5toc02
LOAD CURRENT (A)
EFFICIENCY
(%)
40
60
80
A: V
IN
= +7.2V
B: V
IN
= +12.0V
C: V
IN
= +24.0V
D: V
IN
= +36.0V
B
A
D
C
80
85
90
95
100
105
110
0 10203040
IN PIN QUIESCENT CURRENT
vs. INPUT VOLTAGE (5.5V TO 36V)
MAX1744/5toc03
INPUT VOLTAGE (V)
QUIESCENT CURRENT (
µ
A)
0
1
4
5
6
3.5 4.5 5.5
IN PIN QUIESCENT CURRENT
vs. INPUT VOLTAGE (3.5V TO 5.5V)
MAX1744/5toc04
INPUT VOLTAGE (V)
QUIESCENT CURRENT (mA)
2
3
V
OUT
= 3.3V
0
60
40
20
80
120
100
140
0 10203040
SWITCHING FREQUENCY
vs. INPUT VOLTAGE
MAX1744/5toc05
INPUT VOLTAGE (V)
SWITCHING FREQUENCY (kHz)
V
OUT
= 3.3V
I
OUT
= 2.0A
IN PIN QUIESCENT CURRENT
vs. TEMPERATURE
MAX1744/5toc06
TEMPERATURE (
°
C)
QUIESCENT CURRENT (
µ
A)
1007525 500-25
86
87
88
89
90
91
92
93
94
95
85
-50 125
0
40
20
60
100
80
120
0 1000
2000
3000
4000 5000
EXT RISE AND FALL TIMES
vs. CAPACITANCE
MAX1744/5toc07
CAPACITANCE (pF)
t
RISE
AND t
FALL
(ns)
V
IN
= +5V
t
FALL
t
RISE
EXT RISE AND FALL TIMES
vs. TEMPERATURE
MAX1744/5toc08
TEMPERATURE (°C)
t
RISE
AND t
FALL
(ns)
1007525 500-25
5
10
15
20
25
30
35
40
45
50
0
-50 125
t
RISE
t
FALL
V
IN
= +5V
C
L
= 1000pF
CURRENT-SENSE TRIP LEVEL
vs. TEMPERATURE
MAX1744/5toc09
TEMPERATURE (°C)
CURRENT-SENSE TRIP LEVEL (mV)
1007550250-25
90
95
100
105
110
115
85
-50 125
Typical Operating Characteristics
(Circuit of Figure 1, T
A
= +25°C, unless otherwise specified.)
Seitenansicht 4
1 2 3 4 5 6 7 8 9 10 ... 13 14

Kommentare zu diesen Handbüchern

Keine Kommentare