公开(公告)号：US20210232171A1

公开(公告)日：2021-07-29

申请号：US16096638

申请日：2018-08-28

Applicant: Micron Technology, Inc.

Inventor： Wei Lu Chu

IPC: G05F3/30 ,  G05F1/46

Abstract: A semiconductor device may include a bandgap circuit that outputs a reference voltage. The semiconductor device may also include a startup circuit coupled to the bandgap circuit. The startup circuit may connect a voltage source to a node that corresponds to an output of the bandgap circuit in response to the bandgap circuit being initialized. The startup circuit may also disconnect the voltage source from the node in response to the reference voltage being greater than a threshold.

公开(公告)号：US10459466B2

公开(公告)日：2019-10-29

申请号：US16000220

申请日：2018-06-05

Applicant: Micron Technology, Inc.

Inventor： Wei Lu Chu ,  Dong Pan

IPC: G05F3/16 ,  G05F1/46 ,  G05F3/30 ,  G05F1/575 ,  G05F1/59 ,  G05F3/26

Abstract: An apparatus is described comprising a bandgap reference circuit comprising: an amplifier including first and second inputs and an output; and a bandgap transistor coupled to the output of the amplifier at a control electrode thereof, the bandgap transistor being further coupled commonly to the first and second inputs of the amplifier at a first electrode thereof to form a feedback path. The apparatus further comprises a resistor coupled to the first electrode of the bandgap transistor.

公开(公告)号：US20180173267A1

公开(公告)日：2018-06-21

申请号：US14762162

申请日：2015-04-30

Applicant: Micron Technology, Inc.

Inventor： Wei Lu Chu

IPC: G05F3/30 ,  G11C5/14

CPC classification number: G05F3/30 ,  G11C5/14

Abstract: Apparatuses, methods, and current generators that generate current are described. An example apparatus includes a current source configured to provide a current. The current source may be coupled to a voltage source via a transistor. The transistor may be configured to provide the voltage source to the current source based on a voltage of a gate of the transistor. The example apparatus may further include an amplifier configured to provide a voltage to the gate of the transistor based on a voltage differential between two inputs. The voltage differential between the two inputs may adjust due to process, voltage or temperature changes such that the current provided by the current source remains constant.