Datasheet

MAX5019/MAX5020
Current-Mode PWM Controllers with Integrated
Startup Circuit
4 _______________________________________________________________________________________
46.8
47.2
47.0
47.6
47.4
47.8
48.0
-40 20 40-20 0 60 80
MAX5020
MAXIMUM DUTY CYCLE
vs. TEMPERATURE
MAX5019 toc04
TEMPERATURE (
°
C)
MAXIMUM DUTY CYCLE (%)
FB = GND
V+ SUPPLY CURRENT
vs. TEMPERATURE
MAX5019 toc05
1.55
1.56
1.58
1.57
1.62
1.63
1.61
1.60
1.59
1.64
V+ SUPPLY CURRENT (mA)
-40 0 20-20
40
60 80
TEMPERATURE (
°
C)
FB = V
DD
= GND
4.40
4.43
4.42
4.41
4.45
4.44
4.49
4.48
4.47
4.46
4.50
-40 -20 0 20 40 60 80
SOFT-START SOURCE CURRENT
vs. TEMPERATURE
MAX5019 toc06
TEMPERATURE (
°
C)
SOFT-START SOURCE CURRENT (µA)
V
DD
= FB = SS_SHDN = GND
V+ = 110V
13.50
13.55
13.70
13.65
13.60
13.75
13.80
-40 0-20 20 40 60 80
V+ INPUT CURRENT vs.
TEMPERATURE (AFTER STARTUP)
MAX5019 toc07
TEMPERATURE (
°
C)
V+ INPUT CURRENT (µA)
V+ = 110V, V
DD
= 13V, FB = GND
179.0
180.0
179.5
180.5
182.0
181.5
181.0
182.5
-40 -20 0 20 40 60 80
V+ SHUTDOWN CURRENT
vs. TEMPERATURE
MAX5019 toc08
TEMPERATURE (
°
C)
V+ SHUTDOWN CURRENT (µA)
V+ = 110V, FB = SS_SHDN = GND
0.483
0.484
0.486
0.485
0.487
0.488
-40 0-20 20 40 60 80
CS THRESHOLD VOLTAGE
vs. TEMPERATURE
MAX5019 toc09
TEMPERATURE (
°
C)
CS THRESHOLD VOLTAGE (V)
FB = GND
NDRV RESISTANCE
vs. TEMPERATURE
MAX5019 toc10
1.0
1.5
2.5
2.0
4.0
4.5
3.5
3.0
5.0
NDRV RESISTANCE (Ω)
-40 0 20-20
40
60 80
TEMPERATURE (°C)
HIGH-SIDE DRIVER
LOW-SIDE DRIVER
-40 -20 0 20 40 60 80
CURRENT-LIMIT DELAY
vs. TEMPERATURE
MAX5019 toc11
TEMPERATURE (°C)
CURRENT-LIMIT DELAY (ns)
188
190
192
194
196
198
200
202
204
206
208
210
FB = GND, 100mV OVERDRIVE ON CS
2.400
2.402
2.406
2.404
2.408
2.410
010155 2025303540
V
SS_SHDN
vs. V
DD
MAX5019 toc12
V
DD
(V)
V
SS_SHDN
(V)
Typical Operating Characteristics (continued)
(V+ = 48V, V
DD
= 13V, CS = GND, NRDV is open circuit, T
A
= +25°C, unless otherwise noted.)