Resources Contact Us Home
Integrated LDO with variable resistive load

Image Number 5 for United States Patent #8143868.

To provide adequate compensation for a wide range of output loads, a low dropout (LDO) regulator has an amplifier, a pass transistor, a voltage divider, a compensation network, and a control circuit. The amplifier outputs a comparison result according to a reference signal and a feedback signal. The pass transistor generates an output current based on the comparison result of the amplifier. The voltage divider generates the feedback signal according to the output current. The compensation network couples the output of the pass transistor to a low-impedance node of the amplifier, and has a compensation capacitor and a variable resistor coupled to the compensation capacitor. The control circuit is coupled to the input of the pass transistor and to the variable resistor for controlling resistance of the variable resistor according to the output current of the pass transistor.

  Recently Added Patents
Image-processing method and program, and image-processing apparatus
Adapter plate for use in mounting an audio/visual device or the like to a surface
Substantially aligned boron nitride nano-element arrays and methods for their use and preparation
Matching engine for comparing data feeds with user profile criteria
Baseball player stationery tab
Semiconductor device and method for manufacturing same
Mask blank, transfer mask, and film denseness evaluation method
  Randomly Featured Patents
Azabicyclo and azacyclo oxime and amine cholinergic agents and methods of treatment
Rotor time constant adaptation for induction motor in vector controlled elevator drive
Skylight curb seal and method
Directional optical coupler
Method for delivering liquified gas to an engine
Wide base type pneumatic tire for construction vehicle
Run flat pneumatic tire and band element therefor
High power, single-frequency tunable laser
Diamond synthesizing method
Ballpoint pen