发明名称 |
Reference current circuit for adjusting its output current at a low power-supply voltage |
摘要 |
A reference current circuit includes a differential amplifier amplifying a difference in potential between a reference voltage and a first node and outputting the amplified potential difference to a second node, and adjusting transistors connected between a supply voltage and the first node. The reference current circuit further includes switches provided correspondingly to the adjusting transistors to apply a voltage of the second node to control electrodes of the adjusting transistors in response to control signals that are respectively input to the switches. The reference current circuit further includes a resistance connected between the first node and a common potential, and an output transistor having its conduction state responsive to the voltage of the second node for controlling a current supplied from the supply voltage to a load.
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申请公布号 |
US7633281(B2) |
申请公布日期 |
2009.12.15 |
申请号 |
US20080101703 |
申请日期 |
2008.04.11 |
申请人 |
OKI SEMICONDUCTOR CO., LTD. |
发明人 |
SUGAI DANYA;SUGIMURA NAOAKI |
分类号 |
G05F3/16 |
主分类号 |
G05F3/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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