US 12,464,613 B2
Level shifter, semiconductor device, switching power supply, and light emitting device
Akira Aoki, Kyoto (JP); and Ryo Takagi, Kyoto (JP)
Assigned to Rohm Co., Ltd., Kyoto (JP)
Filed by ROHM CO., LTD., Kyoto (JP)
Filed on Dec. 29, 2023, as Appl. No. 18/400,443.
Application 18/400,443 is a continuation of application No. PCT/JP2022/028308, filed on Jul. 21, 2022.
Claims priority of application No. 2021-129528 (JP), filed on Aug. 6, 2021.
Prior Publication US 2024/0138039 A1, Apr. 25, 2024
Prior Publication US 2024/0237168 A9, Jul. 11, 2024
Int. Cl. H05B 45/14 (2020.01); H05B 45/345 (2020.01); H05B 45/3725 (2020.01)
CPC H05B 45/14 (2020.01) [H05B 45/345 (2020.01); H05B 45/3725 (2020.01)] 10 Claims
OG exemplary drawing
 
1. A level shifter, comprising:
a current output amplifier configured to output a first output current and a second output current through a first output terminal and a second output terminal thereof, respectively;
a first resistor configured to be connected between each of an inverted input terminal and the first output terminal of the current output amplifier and an application terminal of a ground potential; and
a second resistor configured to be connected between the second output terminal of the current output amplifier and an application terminal of a negative potential lower than the ground potential,
wherein
a first analog signal referenced to the ground potential is accepted at a non-inverted input terminal of the current output amplifier, and a second analog signal referenced to the negative potential is outputted through one terminal of the second resistor.