(China (Mainland))
Product Summary
The LM2577M-15 is a monolithic integrated circuit that provides all of the power and controls functions for step-up (boost), flyback, and forward converter switching regulators. The LM2577M-15 is available in the 15V output voltage version. Requiring a minimum number of external components, the LM2577M-15 is cost effective, and simple to use. Listed in this data sheet are a family of standard inductors and flyback transformers designed to work with these switching regulators. Included on the chip is a 3.0A NPN switch and its associated protection circuitry, consisting of current and thermal limiting, and undervoltage lockout. Other features include a 52 kHz fixed-frequency oscillator that requires no external components, a soft start mode to reduce in-rush current during start-up, and current mode control for improved rejection of input voltage and output load transients.
Parametrics
LM2577M-15 absolute maximum ratings: (1)Supply Voltage: 45V; (2)Output Switch Voltage: 65V; (3)Output Switch Current: 6.0A; (4)Power Dissipation: Internally Limited; (5)Storage Temperature Range: -65℃ to +150℃; (6)Lead Temperature (Soldering, 10 sec.): 260℃; (7)Maximum Junction Temperature: 150℃; (8)Minimum ESD Rating (C = 100 pF, R = 1.5 kW): 2kV.
Features
LM2577M-15 features: (1)Requires few external components; (2)NPN output switches 3.0A, can stand off 65V; (3)Wide input voltage range: 3.5V to 40V; (4)Current-mode operation for improved transient response, line regulation, and current limit; (5)52 kHz internal oscillator; (6)Soft-start function reduces in-rush current during start-up; (7)Output switch protected by current limit, under-voltage lockout, and thermal shutdown.
Diagrams
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IC REG MULTI CONFIG 15V 24-SOIC |
Data Sheet |
Negotiable |
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LM250 |
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LM25005MHX/NOPB |
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Data Sheet |
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