MAX15020 データシートの表示（PDF） - Maxim Integrated
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MAX15020 Datasheet PDF : 18 Pages
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MAX15020
2A, 40V Step-Down DC-DC Converter with
Dynamic Output-Voltage Programming
Typical Operating Characteristics
(VIN = 36V, Circuit of Figure 2, TA = +25°C, unless otherwise noted.)
UNDERVOLTAGE LOCKOUT HYSTERESIS
vs. TEMPERATURE
1.0
ON/OFF THRESHOLD HYSTERESIS
vs. TEMPERATURE
0.20
SHUTDOWN SUPPLY CURRENT
vs. INPUT VOLTAGE
7
0.9
6
0.8
0.15
0.7
5
0.6
4
0.5
0.10
0.4
3
0.3
0.05
2
0.2
1
0.1
0
-40 -15 10 35 60 85 110 135
TEMPERATURE (C)
0
-40 -15 10 35 60 85 110 135
TEMPERATURE (C)
0
0
10
20
30
40
INPUT VOLTAGE (V)
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
16
OPERATING FREQUENCY
vs. TEMPERATURE
308
MAXIMUM DUTY CYCLE
vs. INPUT VOLTAGE
100
14
306
98
304
96
12
302
94
10
300
92
8
298
90
6
296
88
294
86
4
292
84
2
290
82
0
288
80
0
10
20
30
40
-40 -15 10 35 60 85 110 135
0
10
20
30
40
INPUT VOLTAGE (V)
TEMPERATURE (C)
INPUT VOLTAGE (V)
LOOP GAIN/PHASE
vs. FREQUENCY
50
180 MAX15020 toc07
MAXIMUM LOAD CURRENT
vs. INPUT VOLTAGE
3.5
40
PHASE
144
30
108
3.4
3.3
TA = -45C
20
72
3.2
10
GAIN
36
0
0
3.1
3.0 TA = +25C
-10
-36
2.9
-20
-72
2.8
TA = +85C
-30
-40 VIN = 37V, VOUT = 15V,
IOUT = 2.02A
-50
0.1
1
10
100
FREQUENCY (kHz)
-108
-144
-180
1000
2.7
2.6
2.5
0
5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
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