MAX5071 Maxim Integrated Products, MAX5071 Datasheet - Page 7

• Manufacturer Part Number: MAX5071
• Description: (MAX5070 / MAX5071) Current-Mode PWM Controllers
• Manufacturer: Maxim Integrated Products

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