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National Semiconductor LM1578A/LM2578A/LM3578A Switching Regulator Datasheet
The LM1578A family (including LM2578A and LM3578A) are switching regulator controllers that can be configured for buck, boost, inverting and transformer‑based topologies. They feature separate inverting and non‑inverting comparator inputs with an internal 1.0 V reference, an on‑board oscillator, and a current‑limit terminal that can be referenced to ground or V\u200bREF.
The device operates from 2 V to 40 V supply voltages, delivers up to 750 mA output current, and supports a duty cycle up to 90 %. Detailed electrical characteristics, mechanical dimensions and application notes are provided for designers.
National Semiconductor LM1578A specifications
| Supply Voltage Range | 2 V to 40 V |
|---|---|
| Maximum Output Current | 750 mA |
| Maximum Duty Cycle | 90 % |
| Output Saturation Voltage | < 0.9 V |
Source: National Semiconductor LM1578A/LM2578A/LM3578A Switching Regulator Datasheet
All National Semiconductor LM1578A documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum output current of the LM1578A series?
The device can deliver up to 750 mA of output current.
From: National Semiconductor LM1578A/LM2578A/LM3578A Switching Regulator Datasheet
What supply voltage range does the LM1578A support?
It operates from 2 V to 40 V supply voltage.
From: National Semiconductor LM1578A/LM2578A/LM3578A Switching Regulator Datasheet
What is the maximum output current?
The regulator can deliver up to 750 mA of output current.
From: National Semiconductor LM1578A/LM2578A/LM3578A Switching Regulator Datasheet
What supply voltage range does the LM1578A support?
It operates from 2 V up to 40 V.
From: National Semiconductor LM1578A/LM2578A/LM3578A Switching Regulator Datasheet