Boost control chip

Abstract

The invention provides a boost control chip which can be coupled with an inductor and an N-shaped transistor and comprises a first pin, a second pin and a third pin. The first pin is used for receiving an operation voltage and can be coupled with one end of the inductor; the second pin is used for receiving a first voltage and can be coupled with the other end of the inductor and the drain electrode of the N-shaped transistor; the third pin can be coupled with the grid electrode of the N-shaped transistor; and the source electrode of the N-shaped transistor is directly connected with a grounded voltage. The boost control chip provided by the invention can raise the low operation voltage and enhance the application space of circuits.

Description

technical field [0001] The present invention relates to a boost control chip, in particular to a boost control chip applicable to a boost circuit. Background technique [0002] With the advancement of technology, the types and functions of electronic products are increasing day by day, among which portable electronic products are the mainstream in the market. Generally speaking, portable electronic products operate on internal batteries. In order to save the power loss of the battery, the existing practice is to lower the operating voltage of the portable electronic product. However, low operating voltage may not be able to properly drive some components inside electronic products. Therefore, a boost circuit is needed to boost the low operating voltage. [0003] FIG. 1 is a schematic diagram of a conventional boost circuit 100 . In order to know the magnitude of the current flowing through the transistor 150 , the conventional boost circuit 100 has a resistor 170 . The ...

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Problems solved by technology

However, the presence of resistor 170 will increase the number of components and reduce the usable space of the circuit

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