MAX8540EEE+ Maxim Integrated Products, MAX8540EEE+ Datasheet - Page 13

• 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

Figure 2. MAX8540 Functional Diagram
Voltage-Mode PWM Controllers for Isolated Supplies
SKTOFF
SKTON
ILIM
OV
UV
CS
EN
SS
3.02V
V
CC
8V
Synchronizable, High-Frequency Current- and
______________________________________________________________________________________
SHORT-CIRCUIT
SS_RESET
TIMER
1.25V
V
COMPARATOR
OVERVOLTAGE
COMPARATOR
CC
UVLO
REF
1.2V
UNDERVOLTAGE
COMPARATOR
5µA
ENABLE
TEMP OK
DECODER RAMP
FREQ/SYNC
CLK
OSC
MAX8540
SS_RESET
CLK
COMPARATOR
CS
PWM
80% MAX
DRIVE LOGIC
Functional Diagrams
REFERENCE
ENABLE
MAX
COMPENSATION
TON
5V
SLOPE
V
REF
DRV
SCOMP
OPTO
GND
MAXDTY
CC
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