Patent ID: 9058762
Filing Date: 2015-06-16
Classification: G09G,H03K

Abstract:
1. An LED driver circuit, comprising: an input module configured to receive a reference current; a regulator module for maintaining a constant internal voltage; an output module for generating output current, wherein the input module is operatively connected to the regulator module, and the regulator module is operatively connected to the output module, wherein the regulator module further comprises an operational amplifier and two or more output gate drivers, wherein the operational amplifier further comprises an inverting input, a non-inverting input and an output, wherein the inverting input of the amplifier and the output of the amplifier are operatively connected to the input module, and wherein each of the output gate drivers comprises a first P-channel MOS right transistor, a second P-channel MOS right transistor as a source follower, and an N-channel MOS right transistor, wherein the gate of each of the second P-channel MOS right transistors are coupled together and the source of each of the second P-channel MOS right transistors are coupled together.