LM3478MM Datasheet

DC/DC Switching Controllers


The LM3478MM is a versatile Low-Side N-FET switching regulator controller. It is suitable for use in topologies requiring low side FET, such as boost, flyback, SEPIC, etc. Moreover, the LM3478MM can be operated at extremely high switching frequency in order to reduce the overall solution size. The switching frequency of LM3478MM can be adjusted to any value between 100kHz and 1MHz by using a single external resistor.Current mode control provides superior bandwidth and transient response, besides cycle-by-cycle current limiting.Output current can be programmed with a single external resistor. LM3478MM Features • 8-lead Mini-SO8 (MSOP-8) package• Internal push-pull driver with 1A peak current capability• Current limit and thermal shutdown• Frequency compensation optimized with a capacitor and a resistor• Internal softstart• Current Mode Operation• Undervoltage Lockout with hysteresis LM3478MM Applications • Distributed Power Systems• Battery Chargers• Offline Power Supplies• Telecom Power Supplies• Automotive Power Systems


[{"Name":"RoHS","Value":"No "},{"Name":"Input Voltage","Value":"2.97 V to 40 V "},{"Name":"Switching Frequency","Value":"0.1 MHz to 1 MHz "},{"Name":"Output Voltage","Value":"1.26 V to 40 V "},{"Name":"Output Current","Value":"1 A "},{"Name":"Number of Outputs","Value":"1"},{"Name":"Maximum Operating Temperature","Value":"+ 125 C "},{"Name":"Mounting Style","Value":"SMD/SMT "},{"Name":"Package / Case","Value":"MSOP-8 "},{"Name":"Packaging","Value":"Reel "}]

Manufacturer information


Diodes Incorporated is a leading global manufacturer and supplier of high-quality, application-specific, standard products within the broad discrete, logic and analog semiconductor markets. Diodes Incorporated primarily serves the computing, consumer, communications, industrial and automotive segments. Diodes’ diverse product portfolio includes parts for LCD/LED TVs and displays, desktop, notebook and tablet computing, smartphones and hand-held devices, set-top boxes, power supplies and USB protection as well as many other application areas.

Diodes Incorporated offers a wide array of products including diodes, rectifiers, transistors, MOSFETs, gate drivers, protection devices, function-specific arrays, amplifiers and comparators, Hall-effect sensors and temperature sensors, power management devices including LED drivers, AC-DC converters and controllers, DC-DC switching regulators, linear voltage regulators, current monitors, and voltage reference and shunt regulators, along with special function devices including USB power switches, load switch devices, voltage supervisors and motor controllers.

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