MAX8541 MAXIM [Maxim Integrated Products], MAX8541 Datasheet - Page 3

• Manufacturer Part Number: MAX8541
• Description: Synchronizable, High-Frequency Current- and Voltage-Mode PWM Controllers for Isolated Supplies
• Manufacturer: MAXIM [Maxim Integrated Products]

ELECTRICAL CHARACTERISTICS (continued)
(V
R
noted. Typical values are at T
ILIM Leakage Current
Hiccup Skip Off-Time
Hiccup Skip Off-Charging
Hiccup Skip On-Time
Hiccup Skip On-Charging
Current
Hiccup SKTOFF Voltage
Threshold
OPTO
Input Bias Current
Minimum Input Voltage
Maximum Input Voltage
DUTY CYCLE
Maximum Duty Cycle
SOFT-START
Source Current
Pulldown Resistance in Shutdown I
Time
FREQUENCY
Initial Accuracy
Switching Frequency Range
SCOMP (MAX8540)
Slope Compensation
PRAMP (MAX8541)
Ramp Voltage Amplitude
DRV (MOSFET DRIVER)
Rise Time
Voltage-Mode PWM Controllers for Isolated Supplies
SCOMP
VCC
= 12V, C
= 68kΩ, R
PARAMETER
REF
PRAMP
Synchronizable, High-Frequency Current- and
= 1µF, V
_______________________________________________________________________________________
= 25kΩ, C
A
UV
= +25°C.)
= V
SKTON
Minimum voltage for duty-cycle control
Maximum voltage for duty-cycle control
C
C
V
R
R
V
Internally programmed limit for maximum duty cycle at
all frequencies
V
R
R
R
R
R
R
R
R
C
C
OV
SS
OPTO
MAXDTY
MAXDTY
UV
SS
FREQ
FRE Q
FRE Q
SKTOFF
SKTON
SCOMP
SCOMP
PRAMP
PRAMP
PRAMP
DRV
DRV
= 10mA, V
= V
= 1V
= 1.3V, R
= 0.01µF, C
= 500pF, 10% to 90% of V
= 2000pF, 10% to 90% of V
= 48.7kΩ
= 8.87kΩ
= 32.4kΩ
= 3.5V
OPTO
= 0.01µF (Note 3)
= 12.4kΩ
= 21kΩ
= 42kΩ
= 14kΩ
= 204kΩ
= 0.1µF (Note 3)
= 24.3kΩ, V
= 130kΩ, V
, V
MAXDTY
E N
ILIM
= 3V
SKTOFF
= 2V, R
UV
CONDITIONS
UV
= 97.6kΩ
= 1.3V
= 1.3V
= 0.1µF, V
FREQ/SYNC
VCC
VCC
CS
= 0.6V, C
= 32.4kΩ, C
DRV
= 10pF, T
SS
= 0.1µF, R
MIN
280
0.9
1.5
2.3
4.5
79
-1
A
= 0°C to +85°C, unless otherwise
MAXDTY
1000
TYP
440
300
200
1.5
2.5
2.5
0.6
2.6
5.5
1.5
0.1
2.5
0.5
90
30
15
80
60
80
10
30
57
9
1
= 97.6kΩ, V
MAX
320
2.1
3.5
2.7
6.5
+1
82
30
UNITS
ms/µF
EN
kHz
kHz
ms
ms
µA
µA
µA
µA
µA
ns
%
Ω
V
V
V
V
V
= 0,
3