Patent ID: 11900865
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 0:
1. A light-emitting diode (LED) driving circuit for driving an LED channel comprising a plurality of LED elements, the LED driving circuit comprising:
a switch-capacitor amplifier circuit configured to sample received input current and amplify an input voltage corresponding to the input current;
a replica circuit configured to connect to the switch-capacitor amplifier circuit in a first period to define a first feedback loop, the replica circuit including a first transistor and a first resistor connected to the first transitor, and the first transistor configured to generate a current based on an output voltage of the switch-capacitor amplifier circuit in the first period; and
an output circuit configured to connect to the switch-capacitor amplifier circuit in a second period to define a second feedback loop, the second period being after the first period, the output circuit including a second transistor and a second resistor connected to the second transistor, and the output circuit configured to generate output current according to the output voltage of the switch-capacitor amplifier circuit in the second period and provide the output current to the LED channel.