MAX5021 Maxim, MAX5021 Datasheet - Page 3

• Manufacturer Part Number: MAX5021
• Description: Current-Mode PWM Controllers for Isolated Power Supplies
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V
+85°C, unless otherwise noted. Typical values are at V
(V
Note 1: All devices are 100% tested at T
Note 2: This minimum current after startup is a safeguard that prevents the V
OSCILLATOR
Switching Frequency
Maximum Duty Cycle
OPTO INPUT
OPTO Pullup Voltage
OPTO Pullup Resistance
IN
IN
24.3
24.2
24.1
24.0
23.9
= +11V to +28V, V
= 15V, T
-40
PARAMETER
that OPTO and NDRV become unconnected.
-20
UNDERVOLTAGE LOCKOUT
A
Current-Mode PWM Controllers for Isolated
= +25°C, unless otherwise noted.)
vs. TEMPERATURE
TEMPERATURE ( C)
0
_______________________________________________________________________________________
20
CS
= 0, OPTO is unconnected, 10nF bypass capacitors at V
40
V
IN
RISING
60
SYMBOL
80
R
V
D
OPTO
OPTO
f
MAX
SW
A
= +25°C. All limits over temperature are guaranteed by characterization.
10.2
10.1
10.0
9.9
9.8
MAX5021
MAX5022
OPTO sourcing 10µA
-40
IN
-20
= +12V, T
UNDERVOLTAGE LOCKOUT
vs. TEMPERATURE
TEMPERATURE ( C)
0
CONDITIONS
A
20
= +25°C, unless otherwise noted.) (Note 1)
Typical Operating Characteristics
V
40
IN
FALLING
IN
60
pin voltage from rising in the event
80
IN
and V
Power Supplies
CC
53
52
50
49
48
47
51
, NDRV unconnected, T
-40
MIN
230
4.5
-20
STARTUP CURRENT
vs. TEMPERATURE
TYP
262
6.2
50
75
TEMPERATURE ( C)
0
20
MAX
290
5.5
7.9
51
76
40
V
IN
A
= 23.0V
= -40°C to
60
UNITS
kHz
k
%
V
80
3