LM3488MM National Semiconductor, LM3488MM Datasheet - Page 13

• Manufacturer Part Number: LM3488MM
• Description: IC, N-CH CONTROLLER, MSOP-8
• Manufacturer: National Semiconductor

Specifications of LM3488MM

• Primary Input Voltage: 40V
• No. Of Outputs: 1
• Output Current: 1A
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +125°C
• Termination Type: SMD
• Input Voltage Primary Min: 2.95V
• Output Voltage Min: 1.26V
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

SHORT-CIRCUIT PROTECTION
When the voltage across the sense resistor (measured on
I
SEN
Pin) exceeds 350mV, short-circuit current limit gets acti-
FIGURE 8. Shutdown Operation in Frequency Adjust Mode
FIGURE 9. Shutdown Operation in Synchronization Mode
FIGURE 7. Frequency Synchronization
13
vated. A comparator inside LM3488 reduces the switching
frequency by a factor of 5 and maintains this condition till the
short is removed.
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