Band-gap reference trimming circuit suitable for low voltage
A technology of trimming circuit and low voltage, applied in the field of lithium battery power management, can solve problems such as the inability to achieve the consistency of reference voltage
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[0029] The present invention will be further illustrated below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.
[0030] Such as Figures 1 to 6 As shown, the embodiment of the present invention provides a bandgap reference trimming circuit suitable for low voltage, including a bandgap reference trimming circuit 1, an oscillator circuit 2, a voltage detection circuit, a charge pump circuit 3 and a logic circuit 4 .
[0031] Wherein, the bandgap reference trimming circuit 1 is connected with the input power supply VDD for generating a reference voltage VREF, a divided voltage VBER, a control voltage signal VBP and a control voltage signal VBN. Wherein, the initial value of the reference voltage VRE...
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