Title:
LED LIGHTING DRIVE POWER SUPPLY LSI CIRCUIT
Document Type and Number:
Japanese Patent JP2021174757
Kind Code:
A
Abstract:
To provide an LED lighting drive power supply LSI circuit including a power circuit IC stored in one LSI chip, the LED lighting drive power supply LSI circuit being capable of achieving lighter weight and lower cost.SOLUTION: In an LED lighting drive power supply, an LED controller IC 6 includes an operational amplifier 2 for dimming voltage buffer, an operational amplifier 3 for monitor voltage amplification, an operational amplifier 4 for dimming voltage/monitor voltage addition, a BGR current/variable resistor/BGR voltage 5, and a diode 9 (aid) for high frequency bypass. The LED controller IC6 is used as a set with an NMOSFET 7 for LED drive, so that a feedback system in which an LED is directly driven with a full-wave rectified AC voltage can be configured.SELECTED DRAWING: Figure 1
Inventors:
FUJIMOTO TAKAYOSHI
Application Number:
JP2020100471A
Publication Date:
November 01, 2021
Filing Date:
April 24, 2020
Export Citation:
Assignee:
KAKI CO LTD
International Classes:
H05B45/30; H05B45/48