MAX8540EEE+ Maxim Integrated Products, MAX8540EEE+ Datasheet - Page 3

• Manufacturer Part Number: MAX8540EEE+
• Description: IC PWM CTRLR CURR-MODE 16-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX8540EEE+

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 1MHz
• Duty Cycle: 82%
• Voltage - Supply: 7.6 V ~ 18 V
• Buck: No
• Boost: No
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: Yes
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-QSOP
• Frequency-max: 1MHz
• Duty Cycle (max): 80 %
• Mounting Style: SMD/SMT
• Switching Frequency: 200 KHz to 1000 KHz
• Maximum Operating Temperature: + 85 C
• Fall Time: 53 ns
• Minimum Operating Temperature: - 40 C
• Rise Time: 57 ns
• Synchronous Pin: Yes
• Topology: Flyback, Forward
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
C
C
V
Minimum voltage for duty-cycle control
Maximum voltage for duty-cycle control
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
UV
SS
FRE Q
FRE Q
MAXDTY
MAXDTY
FREQ
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