| Patent application number | Description | Published |
|---|
| 20080198899 | Temperature detection circuit - Provided is a temperature detection circuit in which an erroneous operation which may be caused at the time of activation of a power supply can be prevented. While an output voltage of a temperature sensor circuit ( | 08-21-2008 |
| 20080285624 | Temperature Sensor Circuit - A temperature sensor circuit whose output voltage has high precision is provided. The temperature sensor circuit includes a Darlington circuit having bipolar transistors, a constant current circuit, and a current control circuit. Emitter currents of the bipolar transistors are made equal to one another by the constant current circuit. Base currents corresponding to the emitter currents of the respective bipolar transistors are sunk by the current control circuit. | 11-20-2008 |
| 20090206912 | Temperature detection circuit - Provided is a temperature detection circuit which can, even when a set range of detected temperature is enlarged, suppress a rise in a lowest operating voltage. The temperature sensor circuit has a function of adjusting a voltage level of an output voltage, thereby suppressing the output voltage of the temperature sensor circuit and a reference voltage from a reference voltage circuit at a predetermined temperature. | 08-20-2009 |
| 20100156507 | Temperature detection circuit - Provided is a temperature detection circuit capable of preventing malfunction, which may occur when power is turned on. A switch circuit for giving such a potential that a comparator detects a low temperature is provided at an output terminal of a temperature sensor circuit. A switch circuit for giving such a potential that the comparator detects a low temperature is provided at an output terminal of a reference voltage circuit. When the power is turned on, each of the switch circuits is set by a switch control circuit such that the comparator detects a low temperature. | 06-24-2010 |
| 20100176839 | POWER SUPPLY VOLTAGE MONITORING CIRCUIT AND ELECTRONIC CIRCUIT INCLUDING THE POWER SUPPLY VOLTAGE MONITORING CIRCUIT - Provided is a power supply voltage monitoring circuit ( | 07-15-2010 |
| 20100176854 | DELAY CIRCUIT - Provided is a delay circuit that has a delay time period independent of a power supply voltage and has the equal delay time period between a case of a change in input signal from Low to High and a case of a change in input signal from High to Low. The delay time period is determined as a time period necessary for a voltage of a capacitor ( | 07-15-2010 |
| 20100176874 | VOLTAGE DETECTION CIRCUIT - Provided is a voltage detection circuit having a small circuit scale. A P-type metal oxide semiconductor (PMOS) transistor ( | 07-15-2010 |
| 20100180059 | DETECTION CIRCUIT AND SENSOR DEVICE - Provided is a detection circuit for monitoring a power supply voltage with a circuit configuration in which power consumption is reduced, and a sensor device including the detection circuit. A detection circuit ( | 07-15-2010 |
| 20100321845 | OVERHEAT PROTECTION CIRCUIT AND POWER SUPPLY INTEGRATED CIRCUIT - Provided is a power supply integrated circuit including an overheat protection circuit with high detection accuracy. The overheat protection circuit includes: a current generation circuit including: a first metal oxide semiconductor (MOS) transistor including a gate terminal and a drain terminal that are connected to each other, the first MOS transistor operating in a weak inversion region; a second MOS transistor including a gate terminal connected to the gate terminal of the first MOS transistor, the second MOS transistor having the same conductivity type as the first MOS transistor and operating in a weak inversion region; and a first resistive element connected to a source terminal of the second MOS transistor; and a comparator for comparing a reference voltage having positive temperature characteristics and a temperature voltage having negative temperature characteristics, which are obtained based on a current generated by the current generation circuit. | 12-23-2010 |
| 20110158285 | TEMPERATURE DETECTION SYSTEM - Provided is a temperature detection system which is low in cost. The temperature detection system includes a plurality of temperature detection ICs ( | 06-30-2011 |
