LM2578A - 开关稳压器

LM2578A是TI德州仪器公司的一款转换器（集成开关）产品，LM2578A是开关稳压器，本站介绍了LM2578A的封装应用图解、特点和优点、功能等，并给出了与LM2578A相关的TI元器件型号供参考。

LM2578A - 开关稳压器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

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.

产品特性

Inverting and Non-Inverting Feedback Inputs
1.0V Reference at Inputs
Operates from Supply Voltages of 2V to 40V
Output Current up to 750 mA, Saturation Less than 0.9V
Current Limit and Thermal Shut Down
Duty Cycle up to 90%

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