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LDOs work with inputs up to 36V, and need only 1µA quiescent

LDOs work with inputs up to 36V, and need only 1µA quiescent

Posted Date: 2023-06-22

LDOs work with inputs up to 36V, and need only 1µA quiescent

The primary three units within the deliberate TCR1HF collection, out there as we speak, are TCR1HF18B, TCR1HF33B and TCR1HF50B with mounted outputs of 1.8V, 3.3V and 5.0V respectively. Gadgets are within the pipeline at 2.5, 2.8, 3.0, 3.1 and three.2V.

Most drop-out over the -40 to 125°C working vary is 1.06V at 150mA for the 1.8V model, falling to 660mV for the 5V half. The output limits at 200mA over temperature (300mA 25°C). These figures are when provided with 24V.

Regardless of these drop-out figures, that are from the info sheet, the machine is specified to function at 4V minimal – Electronics Weekly has requested why, so watch this house.

Most survivable voltage on the availability pin and the management pin are 40V, and max energy in a 25.4mm sq. of FR4 board is 580mW.

Quiescent present is usually 1μA (1.6μAmax over temperature at 24V) which drops to 480nAmax over temp when the management pin is used to disable the IC.

With regards to the management pin, Toshiba stated: “Relying on the Vin voltage and utility velocity, Vout voltage could happen as a consequence of leakage present even when management=low [output disabled].” Altering the output capacitor or enter slew price are proposed countermeasures if analysis exhibits this occurring.

The mandatory exterior capacitors could be ceramic, and with a 1μF output capacitor output transients are sometimes -60mV or +50mV with a 1μs load step from 0 to 10mA or again.

Protections embrace over-current and thermal shutdown.

Packaging is 2.8 x 2.9 x 1.1mm SOT-25 (known as ‘SMV’ by Toshiba).

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