Dual LDOs have microprocessor reset option

Microchip's new dual CMOS low-dropout regulators offer two LDOs in a single package.

Microchip's new dual CMOS low-dropout regulators offer two LDOs in a single package.

The TC1301A/B and TC1302A/B both contain 150 and 300mA LDOs.

The TC1301A/B also includes a microcontroller reset function for added flexibility.

By combining these parts into a single device the TC1301A/B and TC1302A/B require fewer passive and discrete components, reducing board space requirements and lowering overall system cost.

Other features include an overcurrent limit and overtemperature protection, as well as low crosstalk between the voltage output channels resulting in reduced noise coupling.

The dropout voltage for these devices is as low as 104mV at 300mA while the supply current is as low as 103uA.

The TC1301A/B and TC1302A/B are available in a small 3X3 MSOP DFN package that has better power dissipation characteristics for a smaller footprint compared with other packages such as SOIC-8, SOP-8 and MSOP-8.

The new LDOs have a similar pinout to Microchip's TC1300 product, with the exception of an additional voltage-out pin, allowing existing customers to use these new devices without any major redesigns.

Typical applications for the TC1301A/B and TC1302A/B include cellphones, PDAs, wireless LANs, portable computing and communication applications.

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