MAX8540EEE+ Maxim Integrated Products, MAX8540EEE+ Datasheet - Page 2

• 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

ABSOLUTE MAXIMUM RATINGS
V
OPTO, UV, OV, EN, PRAMP, ILIM, REF to GND ......-0.3V to +6V
SCOMP, FREQ, CS, SKTON, SKTOFF, SS,
DRV to GND ................................................-0.3V to V
Continuous Power Dissipation (T
Synchronizable, High-Frequency Current- and
Voltage-Mode PWM Controllers for Isolated Supplies
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
R
noted. Typical values are at T
2
V
Operating Voltage Range
Undervoltage Lockout
Undervoltage Lockout Hysteresis
Supply Current
Shutdown Current
REF
Output Voltage
Load Regulation
Line Regulation
Pulldown Resistor in Shutdown
UNDERVOLTAGE/OVERVOLTAGE (UV/OV)
UVLO Threshold
Input Bias Current
OVLO Threshold
EN
Input Low Threshold
Input High Threshold
Pullup Current
CURRENT LIMIT
V
CS Current-Limit to DRV Turn-Off
Delay
V
Voltage
CC
SCOMP
VCC
MAXDTY to GND .....................................-0.3V to V
16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW
ILIM
CS
CC
_______________________________________________________________________________________
to GND ............................................................-0.3V to +20V
Cycle-by-Cycle Threshold
= 12V, C
Range
= 68kΩ, R
PARAMETER
REF
PRAMP
= 1µF, V
= 25kΩ, C
A
UV
= +25°C.)
A
= V
= +70°C)
SKTON
(Note 1)
V
V
V
I
V
I
I
V
V
V
V
V
V
V
V
V
Includes leading-edge blanking time
Accuracy when V
V
OV
REF
REF
REF
CC
CC
REF
VCC
UV
UV
OV
OV
IL
IH
ILIM
EN
EN
EN
= V
= 0
= 3V
= 0
= 3V
rising, 120mV typical hysteresis
= 2.6V
= 0 to 10 mA
falling
rising, 130mV typical hysteresis
rising
falling
falling
is active,
= 1.250V
= 8.4V to 18V
= 0.01µF, C
OPTO
, V
VCC
REF
ILIM
ILIM
SKTOFF
+ 0.3V
+ 0.3V
= 2V, R
CONDITIONS
= 0.075V
= 0.1µF, V
No switching
Switching with no load
FREQ/SYNC
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
CS
= 0.6V, C
= 32.4kΩ, C
DRV
= 10pF, T
SS
= 0.1µF, R
1.200
1.083
2.778
0.075
1.175
MIN
-0.5
2.9
7.6
7.6
6.6
0.9
4.9
2.6
A
5
= 0°C to +85°C, unless otherwise
MAXDTY
+0.01
1.250
1.128
3.021
2.894
1.250
TYP
±10
110
8.0
7.0
1.0
3.5
0.5
5.0
17
20
10
5
5
= 97.6kΩ, V
1.300
1.173
3.010
1.250
1.330
MAX
+0.5
18.0
150
3.1
1.2
8.4
7.4
4.2
6.3
0.9
5.1
50
20
30
UNITS
EN
mA
mA
mV
mV
µA
µA
ns
%
Ω
V
V
V
V
V
V
V
V
V
V
= 0,