MAX5070AASA Ver la hoja de datos (PDF) - Maxim Integrated
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MAX5070AASA Datasheet PDF : 22 Pages
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High-Performance, Single-Ended, Current-Mode
PWM Controllers
Typical Operating Characteristics (continued)
(VCC = 15V, TA = +25°C, unless otherwise noted.)
REFERENCE VOLTAGE (VREF)
vs. TEMPERATURE
5.5
5.4
5.3
5.2
5.1
IREF = 1mA
5.0
4.9
IREF = 20mA
4.8
4.7
4.6
4.5
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
5.25
5.20
5.15
5.10
5.05
5.00
4.95
4.90
4.85
4.80
4.75
0
REFERENCE VOLTAGE (VREF)
vs. REFERENCE LOAD CURRENT
15
30
45
IREF (mA)
REFERENCE VOLTAGE (VREF)
vs. VCC VOLTAGE
5.010
IREF = 1mA
5.005
5.000
4.995
4.990
10 12 14 16 18 20 22 24 26
VCC (V)
OSCILLATOR FREQUENCY (fOSC)
vs. TEMPERATURE
550
540
RT = 3.01kΩ
CT = 1nF
530
520
510
500
490
480
470
460
450
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
OSCILLATOR RT/CT DISCHARGE CURRENT
vs. TEMPERATURE
8.60
8.55 VRT/CT = 2V
8.50
8.45
8.40
8.35
8.30
8.25
8.20
8.15
8.10
8.05
8.00
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
MAXIMUM DUTY CYCLE
vs. TEMPERATURE
100
90
RT = 3.01kΩ
CT = 1nF
MAX5070A/MAX5071A
80
70
60
MAX5070B/MAX5071B/MAX5071C
50
40
30
20
10
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
MAX5070A/MAX5071A
MAXIMUM DUTY CYCLE vs. FREQUENCY
100
CT = 100pF
90
80
70
60
CT = 220pF
50
CT = 1nF
CT = 560pF
40
30
20
10
0
0
400
800 1200 1600 2000
OSCILLATOR FREQUENCY (kHz)
CURRENT-SENSE (CS) TRIP THRESHOLD
vs. TEMPERATURE
1.10
1.08
1.06
1.04
1.02
1.00
0.98
0.96
0.94
0.92
0.90
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
_______________________________________________________________________________________ 7
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