发明名称 |
SIGNAL OUTPUT CIRCUIT AND POWER SOURCE VOLTAGE MONITORING DEVICE USING THE SAME |
摘要 |
<p>There is provided a signal output circuit capable of reducing the current consumption while assuring a base current of the output transistor of an NPN-type bipolar transistor. The signal output circuit (2) includes: an output transistor (10) of the NPN-type bipolar transistor; a ground side output control transistor (11) for turning the output transistor OFF when it is turned ON itself; a base current supply resistance element (12) for supplying current to the base of the output transistor (10); a power source side output control transistor (13) arranged between the base current supply resistance element (12) and the output transistor (10); a ground side current bypass transistor (14) which turns ON/OFF similarly as the ground side output control resistor (11) according to the input signal in such a manner that when it is ON, the current of the base current supply resistance element (12) flows in; and a current limit resistance element (15) arranged between the ground side current bypass transistor (14) and the base current supply resistance element (12).</p> |
申请公布号 |
WO2005064795(A1) |
申请公布日期 |
2005.07.14 |
申请号 |
WO2004JP18997 |
申请日期 |
2004.12.20 |
申请人 |
ROHM CO., LTD;YASUSAKA, MAKOTO |
发明人 |
YASUSAKA, MAKOTO |
分类号 |
H03K17/00;H03K17/22;H03K17/60;(IPC1-7):H03K17/22;H03K19/082 |
主分类号 |
H03K17/00 |
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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