Owner manual

OPERATING FREQUENCY
vs. TEMPERATURE
MAX5080 toc07
TEMPERATURE (
°
C)
OPERATING FREQUENCY (kHz)
1108535 6010-15
242
244
246
248
250
252
254
256
258
260
240
-40 135
V
IN
= 4.5V
V
IN
= 40V
MAXIMUM DUTY CYCLE
vs. INPUT VOLTAGE (MAX5080)
MAX5080 toc08
INPUT VOLTAGE (V)
MAXIMUM DUTY CYCLE (%)
353020 2510 155
82
84
86
88
90
92
94
96
98
100
80
040
MAXIMUM DUTY CYCLE
vs. INPUT VOLTAGE (MAX5081)
MAX5080 toc09
INPUT VOLTAGE (V)
MAXIMUM DUTY CYCLE (%)
353020 2510 155
82
84
86
88
90
92
94
96
98
100
80
040
MAX5080/MAX5081
1A, 40V, MAXPower Step-Down
DC-DC Converters
_______________________________________________________________________________________ 5
Typical Operating Characteristics (continued)
(V
IN
= 12V, see Figure 5 (MAX5080) and Figure 6 (MAX5081), T
A
= +25°C, unless otherwise noted.)
OPEN-LOOP GAIN/PHASE vs. FREQUENCY
MAX5080 toc10
FREQUENCY (kHz)
GAIN (dB)
PHASE (DEGREES)
10001001010.10.010.001
0
20
40
60
80
100
-20
75
100
125
150
175
50
0 10,000
GAIN
PHASE
OUTPUT CURRENT LIMIT
vs. INPUT VOLTAGE
MAX5080 toc11
INPUT VOLTAGE (V)
OUTPUT CURRENT LIMIT (A)
353020 2510 155
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
1.5
040
MAX5080
T
A
= +135
°
C
T
A
= +25
°
C
T
A
= +85
°
C
T
A
= -40
°
C
TURN-ON/OFF WAVEFORM
MAX5080 toc12
I
LOAD
= 1A
V
OUT
2V/div
V
ON/OFF
2V/div
2ms/div
TURN-ON/OFF WAVEFORM
MAX5080 toc13
V
ON/OFF
2V/div
V
OUT
2V/div
2ms/div
I
LOAD
= 100mA