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The LM2578A is a switching regulator which can easily be set up for such DC-to-DC voltage conversion circuits as the buck, boost, and inverting configurations. The LM2578A features a unique comparator input stage which not only has separate pins for both the inverting and non-inverting inputs, but also provides an internal 1.0V reference to each input, thereby simplifying circuit design and p.c. board layout. The output can switch up to 750 mA and has output pins for its collector and emitter to promote design flexibility. An external current limit terminal may be referenced to either the ground or the Vin terminal, depending upon the application. In addition, the LM2578A has an on board oscillator, which sets the switching frequency with a single external capacitor from <1 Hz to 100 kHz (typical).
The LM2578A is an improved version of the LM2578, offering higher maximum ratings for the total supply voltage and output transistor emitter and collector voltages.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LM2578A/LM3578A Switching Regulator datasheet (Rev. E) | 03 Apr 2013 | |
| Application note | AN-1066 Low Cost Boost Converters Using LM3578A (Rev. B) | 23 Apr 2013 | ||
| More literature | Die D/S LM3578A MWC Switching Regulator | 25 Sep 2012 | ||
| Application note | AN-1055 Low-Cost Multiple Output Flyback Converter for I/O Cards | 10 May 2004 |
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This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| PDIP (P) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
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