MAX8540EEE+ Maxim Integrated Products, MAX8540EEE+ Datasheet - Page 4

• 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

Synchronizable, High-Frequency Current- and
Voltage-Mode PWM Controllers for Isolated Supplies
ELECTRICAL CHARACTERISTICS (continued)
(V
R
noted. Typical values are at T
ELECTRICAL CHARACTERISTICS
(V
R
unless otherwise noted.) (Note 5)
4
Fall Time
On-Resistance Pullup
On-Resistance Pulldown
SYNC (EXTERNAL FREQUENCY SYNCHRONIZATION)
Frequency Range
FREQ Input Threshold
THERMAL SHUTDOWN
Thermal Shutdown
V
Operating Voltage Range
Undervoltage Lockout
Undervoltage Lockout Hysteresis
Supply Current
Shutdown Current
REF
Output Voltage
Load Regulation
Line Regulation
Shutdown Resistor
UNDERVOLTAGE/OVERVOLTAGE (UV/OV)
UVLO Threshold
Input Bias Current
OVLO Threshold
SCOMP
PRAMP
VCC
VCC
CC
_______________________________________________________________________________________
= 12V, C
= 12V, C
= 68kΩ, R
= 25kΩ, C
PARAMETER
PARAMETER
REF
REF
PRAMP
SKTON
= 1µF, V
= 1µF, V
= 25kΩ, C
= 0.01µF, C
A
UV
UV
= +25°C.)
= V
= V
SKTON
OV
C
C
Frequency syncs ±30% of frequency set by external R
on FREQ pin
(Note 4)
T
OV
A
DRV
DRV
SKTOFF
rising, 20°C hysteresis
= 2V, R
= V
(Note 1)
V
V
V
I
V
I
I
V
V
V
V
V
V
= 0.01µF, C
= 500pF, 90% to 10% of V
= 2000pF, 90% to 10% of V
REF
REF
REF
CC
CC
REF
VCC
UV
UV
OV
OV
EN
EN
OPTO
= 0.1µF, V
falling
= 3V
= 0
= 3V
falling, 120mV typical hysteresis
rising
= 0
= 0 to 10mA
falling, 130 mV typical hysteresis
rising
rising
= is active,
FREQ/SYNC
= 8.4V to 18V
, V
ILIM
SKTOFF
= 2V, R
OPTO
CONDITIONS
= 32.4kΩ, C
CONDITIONS
= 0.1µF, V
= 2V, V
FREQ/SYNC
No switching
Switching with no load
VCC
VCC
ILIM
CS
SS
= 0.6V, C
= 0.1µF, R
= 4V, V
= 32.4kΩ, C
CS
DRV
MAXDTY
= 0.6V, C
= 10pF, T
SS
= 0.1µF, R
= 97.6kΩ, V
1.200
1.083
2.901
2.778
MIN
-0.5
7.6
7.6
6.6
0.9
4.9
MIN
DRV
0.2
A
2
= 0°C to +85°C, unless otherwise
= 10pF, T
MAXDTY
TYP
TYP
170
EN
27
53
9
7
= 0, R
A
= 97.6kΩ, V
= -40°C to +85°C,
1.300
1.173
3.142
3.010
MAX
MAX
18.0
+0.5
8.4
7.4
4.2
6.3
0.9
5.1
1.0
50
20
30
SCOMP
3
UNITS
= 68kΩ,
UNITS
EN
M H z
°C
mA
mA
mV
mV
ns
µA
Ω
Ω
V
Ω
V
V
V
V
V
V
= 0,