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8866538 Constant current circuit of high efficiency  
The present inventive concept is a hyuntak transistor that can prevent a thermal runaway phenomenon and a low heat high efficiency constant current circuit using an auxiliary transistor capable of...
8823444 Reference voltage generating circuit  
A reference voltage generating circuit comprises a pair of variable resistors connected to a pair of bipolar transistors. A differential amplifier amplifies the band gap voltage difference between...
8766672 Electronic switching device  
An electronic switching device comprises a first bipolar junction transistor (BJT) (2a) adapted to control the flow of current between a pair of switching terminals; a charge recovery circuit...
8717092 Current mirror circuit  
An improved current mirror circuit. The current mirror circuit includes a current mirror base network, a current source transistor, and an error transistor. The current mirror base network...
8638163 Semiconductor device and method of operating the semiconductor device  
A semiconductor device and a method of operating the semiconductor device. The semiconductor device includes a voltage generator configured to generate a test voltage, a graphene transistor...
8587368 Bandgap reference circuit with an output insensitive to offset voltage  
A method includes generating a first current, wherein the first current flows through a first resistor and a first bipolar transistor. A first end of the first resistor is serially connected to an...
8402288 Apparatus and method for controlling voltage and frequency using multiple reference circuits  
A method and an apparatus for controlling voltage level and clock signal frequency supplied to a system. The method comprises: providing at least one reference circuit representative of a behavior...
8390491 Buffer to drive reference voltage  
Embodiments of the present invention may provide an integrated circuit that may comprise a first transistor to receive an input voltage signal at its gate and generate an output voltage signal at...
8378658 Load swtch for removing high frequency ripple, noise and/or spikes while providing power to subsystems  
A semiconductor device, circuit, and AC and DC load switch for maintaining a small input-output differential voltage and providing a defined response. The load switch can include a pass element...
8314650 Reference voltage generating circuit and receiver circuit  
Disclosed is a reference voltage generating circuit including a constant current circuit which comprises: a first resistive element and a bipolar transistor connected in series between a supply...
8313034 Semiconductor device and RFID tag chip  
The present invention provides a reference power supply circuit which does not require trimming and prevents occurrence of deadlock of a band gap reference circuit. An RFID tag chip related to the...
8229379 Frequency planning for switching devices for multi-band broadcast radios  
Systems and methods are disclosed that use multiple DC-DC (direct-current-to-direct-current) regulators and configurable DC-DC regulators with respect to multi-band audio receivers in order to...
8228052 Method and circuit for low power voltage reference and bias current generator  
A system and method are provided for a PTAT cell with no resistors which can operate at low power, has less sensitivity to process variation, occupies less silicon area, and has low noise....
8212545 Reference voltage circuit and electronic device  
In order to realize a reference voltage circuit that operates with lower current consumption while maintaining an operation at lower voltage without causing deterioration of a power supply...
8169256 Bandgap reference circuit with an output insensitive to offset voltage  
A circuit includes an operational amplifier including a first input and a second input. A first resistor has a first end coupled to the first input. A first bipolar transistor includes a first...
8065535 Semiconductor integrated circuit for minimizing a deviation of an internal power supply from a desired value  
A semiconductor integrated circuit includes an external terminal input with an external power supply voltage, a plurality of field effect transistors connected between the external terminal and an...
8049555 Low leakage sampling switch  
An electronic device includes a cascade of a plurality of transistors. Each transistor of the cascade receives an input voltage at a first terminal of its source/drain channel and receives a...
7965125 Current drive circuit  
A current drive circuit allows for a reduction in chip size and prevents an output current from decreasing. The current drive circuit has an output terminal connected to a first resistor. The...
7750726 Reference voltage generating circuit  
A reference voltage generating circuit includes a current generating section, a voltage generating section, a voltage dividing circuit, and a synthesis section. The current generating section...
7598801 Voltage regulator, voltage regulating method thereof and voltage generator using the same  
A voltage regulator and a voltage regulating method thereof and a voltage generator using the voltage regulator are disclosed by the present invention. The voltage regulator of the present...
7541862 Reference voltage generating circuit  
A reference voltage generating circuit is described. The circuit includes a current generating section that generates a first current having a positive temperature coefficient, a voltage...
7535285 Band-gap voltage reference circuit  
A reference circuit. Included are first and second reference circuit blocks, first and second controllable current sources connected to supply current through the first and second reference...
RE40673 Shift register and electronic apparatus  
Each of stages RS(1), RS(2), . . . of a shift register is constituted by six TFTs. A ratio of a channel width and a channel length (W/L) of each of these TFTs 1 to 6 is set in accordance with a...
7482859 Automatic current trimming method & circuits  
Techniques pertaining to a circuit architecture capable of controlling a current source to a predefined precision are disclosed. According to one aspect of the present invention, an automatic...
7477094 Current driving device and display device  
A current driving device includes a reference current source, a first MISFET connected to the reference current source, a plurality of current distribution MISFETs which constitutes a current...
7477095 Current mirror architectures  
A current mirror has an input bipolar device and an output bipolar device, a first MOSFET device to control a current in the input bipolar device, and a second MOSFET device to control a bias...
7456679 Reference circuit and method for generating a reference signal from a reference circuit  
A reference circuit includes: (a) a first reference circuit having a reference signal and a ΔVBE loop; and (b) a modification circuit using a first voltage to change a first current in the ΔVBE...
7449941 Master bias current generating circuit with decreased sensitivity to silicon process variation  
A master bias current generating circuit includes a current source, a first reference leg, and a second reference leg. The first reference leg includes a first transistor having a first size...
7423416 Voltage regulator and method for providing a regulated output  
A voltage regulator includes first and second MOS transistors and a bipolar transistor. The first MOS transistor has a first conductivity type and has a drain coupled to a first power supply...
7400188 Voltage providing circuit  
A voltage providing circuit includes a protective circuit and a power supply circuit. The protective circuit includes a first transistor. A first control signal is input to a collector of the...
7368975 Methods and apparatus for reduced hardware multiple variable voltage generator  
A circuit is described that generates multiple voltages each having a common reference point. The circuit uses a feedback control loop to generate a center voltage, a first voltage generator, and...
7365589 Bandgap reference circuit  
A bandgap reference circuit, taking two or more power supplies as the input power supply for outputting a reference voltage, includes a first reference circuit, a second reference circuit, a power...
7321255 Voltage generating circuit, data driver and display unit  
A voltage generating circuit outputs a generated voltage corresponding to (a+b+c)-bit digital data from a plurality of generated voltages. The voltage generating circuit includes a first selector...
RE39918 Direct current sum bandgap voltage comparator  
A direct current sum bandgap voltage comparator for detecting voltage changes in a power supply. The direct current sum bandgap voltage comparator includes a summing node, current sources...
7262650 Amplitude adjusting circuit  
An amplitude adjusting circuit comprises a first current mirror where a variable current of a variable current source is copied into each of 1st-3rd transistors; a second current mirror where the...
7259614 Voltage sensing circuit  
An auto voltage sense circuit uses voltage controlled current sources to generate a desired reference voltage level that closely tracks the variations and changes of a first voltage level and a...
7248097 Voltage-activated, constant current sink circuit  
Voltage-activated and accurate current sink, and method of providing same. In one aspect, a circuit for accurately sinking current includes a zener diode coupled to a power source at the cathode...
7224209 Speed-up circuit for initiation of proportional to absolute temperature biasing circuits  
A PTAT biasing circuit for use in a bandgap referenced voltage source includes a startup sub-circuit. Prior to activation of a power up indication signal, the speedup circuit forces the PTAT...
7224208 Voltage regulator which outputs a predetermined direct-current voltage with its extreme variation restrained  
A voltage regulator has a reference voltage generator that outputs a reference voltage based on first and second electrical source voltages, an output circuit which generates a predetermined...
7218166 Current stabilization circuit, current stabilization method, and solid-state imaging apparatus  
A circuit for stabilizing an electric current includes a constant voltage supplying circuit configured to supply a constant voltage, and a current generating circuit coupled to the constant...
7215180 Constant voltage circuit  
A constant voltage circuit is disclosed that includes an output control transistor and an overcurrent protection circuit. The overcurrent protection circuit includes a proportional current...
7170337 Low voltage wide ratio current mirror  
A low voltage wide ratio current mirror circuit comprises an n times current mirror having an input port for receiving an input current and an m times current mirror coupled in series to the n...
7138854 Integrated circuit delivering logic levels at a voltage independent from the mains voltage, with no attached regulator for the power section, and corresponding communication module  
The invention concerns an integrated circuit comprising means of delivering, on at least one output, a predetermined output voltage representative of a logic level, means of distributing a mains...
7113412 Drive circuit and power supply apparatus  
In charging a gate of a NMOS transistor Q1, the charging speed is adjustable by varying a resistor R1. When an inputted pulse signal VIN reverses to a negative voltage, a diode D2 turns off. Then,...
7092674 Multi-mode band-gap current reference  
A multi-mode band-gap current reference includes a band-gap current mode module and an adjustable current source module. The band-gap current module provides a band-gap reference current and a...
7039384 Low power band-gap current reference  
A low power supply band-gap current reference includes a 1st P-N junction device, a 2nd and P-N junction device, a 1st current source, a 2nd current source, a 1st resistor, a 2nd resistor, a 3rd...
6967525 Tail current generator circuit for bipolar/MOS differential pair to set precise transconductance  
Disclosed is a circuit and method for generating a tail current for a main reader amplifier (200) input stage using a scaled master differential stage (160) with a given offset to force a given...
6936998 Power glitch free internal voltage generation circuit  
A power glitch free internal voltage generation circuit includes: a voltage divider for dividing level of an internal voltage; a reference voltage generator generating a reference voltage having a...
6933770 Metal oxide semiconductor (MOS) bandgap voltage reference circuit  
A metal oxide semiconductor (MOS) bandgap voltage reference circuit with a plurality of dummy bipolar junction transistors (BJTs) coupled to the mismatched parasitic substrate BJTs for improving...
6906581 Fast start-up low-voltage bandgap voltage reference circuit  
A fast start-up low-voltage bandgap voltage reference circuit is disclosed. The bandgap voltage reference circuit includes: a first current generator, which is implemented by a self-bias unit and...

Matches 1 - 50 out of 192 1 2 3 4 >