LOW DROPOUT REGULATOR WITH HYSTERETIC CONTROL
First Claim
1. An apparatus comprising:
- an output stage comprisingan input supply node to receive an input power supply, andan output supply node to provide an output supply based on the input power supply to a load;
an amplifier to output a control signal to control the output stage according to the output supply and a first reference voltage;
anda hysteresis unit having an input and an output, wherein the hysteresis unit input is coupled to the output supply node, and wherein the hysteresis unit output is coupled to the amplifier output to adjust the control signal according to the output supply and a second reference voltage.
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Abstract
Described is an apparatus comprising: an output stage having an input supply node to receive an input power supply and an output node to provide an output supply to a load; an amplifier to control current strength of the output stage according to the output supply and a reference voltage; and a hysteresis unit to monitor the output supply and operable to control the current strength of the output stage according to a voltage level of the output supply. Described is another apparatus which comprises: a plurality of charge pumps to adjust current strength of the output stage; and a logic unit to monitor the output supply and operable to control the plurality of charge pumps according to a voltage level of the output supply and one or more reference voltages.
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Citations
20 Claims
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1. An apparatus comprising:
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an output stage comprising an input supply node to receive an input power supply, and an output supply node to provide an output supply based on the input power supply to a load; an amplifier to output a control signal to control the output stage according to the output supply and a first reference voltage; and a hysteresis unit having an input and an output, wherein the hysteresis unit input is coupled to the output supply node, and wherein the hysteresis unit output is coupled to the amplifier output to adjust the control signal according to the output supply and a second reference voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus comprising:
an output stage comprising an input supply node to receive an input power supply, an output supply node to provide an output power supply based on the input power supply; a plurality of charge pumps coupled to the output stage to regulate the output power supply; and a logic unit comprising a plurality of comparators to coupled to the plurality of charge pumps to regulate a voltage level of the output supply based on a plurality of reference voltages. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A system comprising:
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a memory; a processor, coupled to the memory, the processor comprising a low dropout regulator comprising; an output stage comprising an input supply node to receive an input power supply, and an output supply node to provide an output supply to a load based on the input power supply; an amplifier to output a control signal to control the output stage according to the output supply and a first reference voltage; and a hysteresis circuit having an input and an output, wherein the hysteresis circuit input is coupled to the output supply node, and wherein the hysteresis circuit output is coupled to the amplifier output to adjust the control signal according to the output supply and a second reference voltage. - View Dependent Claims (18, 19, 20)
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Specification