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Digital wallet instead of paper and plastic documents

02.04.2023

The European Union is developing a digital wallet that will allow you to abandon all paper and plastic documents, in particular, from an ID card or a driver's license.

MEPs have been discussing a new version of the relevant regulation, known by the abbreviation eiDAS, since 2020. The relevant EU institutions have completed work on the preliminary application of the digital wallet. It is just being tested.

The digital wallet will be able to store proof of all permits and rights, including driver's licenses, fishing permits and prescriptions for medicines. In addition, it will allow you to choose to whom and what information to show.

"For example, if a traffic policeman stops you, he really has the right to look at your personal code and name, while the doorman at the bar does not need to know where you live, what your personal code, date of birth or name. He must see that a person is 18. This is all the information he needs, - commented Mark Erlich, an expert at the State Information System Department.

The specialist noted that at present there are no obstacles for the EU states to start using a digital wallet by the end of 2025.

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Linear regulator TPS7A45 16.12.2015

The powerful TPS7A45 linear regulator from Texas Instruments is optimized to handle rapidly changing loads. This LDO is capable of providing a maximum load current of up to 1.5 A with a minimum input-output voltage drop of about 350 mV.

TPS7A45 has minimal intrinsic noise and can be used to power sensitive circuits of radio paths and radio modules.

The TPS7A45 controller's own consumption is 1 mA or less. To turn off the microcircuit, there is an additional shutdown input, when activated, the consumption is reduced to 1 μA.

The output voltage level can be in the range of 1,2...20 V. The specific value of the output voltage is adjusted using a resistive divider (for the adjustable version) or by selecting a chip with a fixed output voltage.

The TPS7A45 includes reverse polarity protection (input) and reverse current protection (output).

The TPS7A45 is available in two package types: SOT-223 (6) and TO-263 (5). This chip will find its application in industrial devices, wireless networks and radio frequency systems.

The main parameters:

Maximum output current: 1,5A;
Regulation error: <1% (25°С);
Rated voltage drop: 300mV;
Noise: <35 μV (10 Hz...100 kHz);
Ripple suppression ratio: 68 dB;
Own consumption: <1 mA;
Output voltage range: 1,5V, 1,8V, 2,5V, 3,3V or adjustable version;
Own consumption in Shutdown mode: <1 μA;
Work with a ceramic capacitor at the output;
Input protection against reverse polarity supply;
Reverse current output protection;
Output overcurrent protection;
Thermal protection.

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