Datasheet

_______________________________________________________________________________________ 5
MAX5019/MAX5020
Current-Mode PWM Controllers with Integrated
Startup Circuit
Typical Operating Characteristics (continued)
(V+ = 48V, V
DD
= 13V, CS = GND, NRDV is open circuit, T
A
= +25°C, unless otherwise noted.)
267.0
268.0
267.5
269.0
268.5
269.5
270.0
270.5
271.0
010155 2025303540
NDRV FREQUENCY vs. V
DD
MAX5019 toc13
V
DD
(V)
NDRV FREQUENCY (kHz)
FB = GND
47.0
47.2
47.1
47.4
47.3
47.6
47.5
47.7
47.9
47.8
48.0
010155 2025303540
MAX5020
MAXIMUM DUTY CYCLE vs. V
DD
MAX5019 toc14
V
DD
(V)
MAXIMUM DUTY CYCLE (%)
V
FB
= 4V, CS = GND
DEVICE POWERED
FROM V+
DEVICE POWERED
FROM V
DD
9.5
9.6
9.8
9.7
10.0
10.1
9.9
10.2
010155 2025303540
V
CC
vs. V
DD
MAX5019 toc15
V
DD
(V)
V
CC
(V)
DEVICE POWERED FROM V
DD
DEVICE POWERED
FROM V+
FB = GND
1.51
1.53
1.52
1.56
1.55
1.54
1.59
1.58
1.57
1.60
04020 60 80 100
V+ SUPPLY CURRENT vs.
V+ VOLTAGE
MAX5019 toc16
V+ VOLTAGE (V)
V+ SUPPLY CURRENT (mA)
V
FB
= V
DD
= GND
0
2
14
6
4
8
10
12
16
0403010 20 50 60 70 80 90 110
V+ SUPPLY CURRENT vs. V+ VOLTAGE
(AFTER STARTUP)
MAX5019 toc17
V+ VOLTAGE (V)
V+ LEAKAGE CURRENT (µA)
100
V
DD
= 13V, FB = GND
9.0
9.4
9.2
9.8
9.6
10.2
10.0
10.4
V
CC
VOLTAGE vs. V
CC
CURRENT
MAX5019 toc18
V
CC
CURRENT (mA)
V
CC
VOLTAGE (V)
0 5.0 10.0 15.0 20.0
V+ = 110V, V
FB
= 4V
V
DD
= 36V
V
DD
= 13V
9.0
9.3
9.2
9.1
9.4
9.5
9.6
9.7
9.8
9.9
10.0
0 5.0 10.0 15.0 20.0
V
CC
VOLTAGE vs. V
CC
CURRENT
MAX5019 toc19
V
CC
CURRENT (mA)
V
CC
VOLTAGE (V)
V
DD
= GND, V
FB
= 4V
V+ = 110V
V+ = 90V
V+ = 72V
V+ = 48V
V+ = 36V
V+ = 24V