Internally Compensated LDO Regulators

Hinojo, José María; Martínez, Clara Luján; Torralba, A.

doi:10.1007/978-3-319-75411-6_2

Cited by 2 publications

(1 citation statement)

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“…In our simulation, the focus has been on 110

as the nominal load and 1.1

as the minimal one. The reason for choosing this amount of the nominal load is that, at this current, the devices are kept in the sub-threshold region of operation to save power [ 35 ].…”

Section: Simulation Resultsmentioning

confidence: 99%

An RFID-Based Self-Biased 40 nm Low Power LDO Regulator for IoT Applications

Bahramali

López‐Vallejo

2021

Micromachines

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There are emerging applications, like bridge structural health monitoring, continuous patient condition and outdoor aiding of the elderly and the disabled, where Internet of things (IoT) nodes are used with very limited accessibility and no connection to the main supply network. They may also be exposed to harsh environmental conditions. These are applications where power and available area constraints are of great concern. In this paper, we design a 1.1 V low dropout (LDO) linear regulator in 40 nm technology to be embedded in IoT nodes. To address these constraints, we used state-of-the-art, variability-aware resistor-less sub-threshold biased CMOS-only ultra low power consumption configurations having low active area. The proposed LDO is internally compensated with embedded 18 pF Miller and 10 pF load capacitances. It can supply 1 mA maximum load current with 0.8 uA quiescent current. The dropout voltage of the regulator is 200 mV with minimum input voltage of 1.3 V. The efficiency of the regulator is 84%, which is about 99% of the maximum achievable efficiency for a 200 mV dropout voltage. The whole circuit, consisting of the embedded voltage reference and the Miller and load capacitances, takes less than 0.007 mm2 of the die size with 1 W power consumption.

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“…In our simulation, the focus has been on 110

as the nominal load and 1.1

as the minimal one. The reason for choosing this amount of the nominal load is that, at this current, the devices are kept in the sub-threshold region of operation to save power [ 35 ].…”

Section: Simulation Resultsmentioning

confidence: 99%