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Bi-directional MOSFETs enable compact designs, cut power loss

03 Feb 2015

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Diodes Inc. has released a bi-directional MOSFET that claims to offer superior protection for charging 1- and 2-cell lithium batteries. The DMN2023UCB4 has a low on-state resistance that minimises power loss while its thin chip-scale packaging allows designers to use the space saved to increase battery capacity.

DMN2023UCB4

Geared to reduce on-state resistance for lower power loss, the DMN2023UCB4 delivers an RSS(on) of less than 26mΩ. In addition, its dual N-channel common-drain configuration particularly suits the charging circuits required for 1- and 2-cell lithium batteries, which commonly use a low-side battery switch. For applications requiring a high-side connection Diodes also offers the DMP2100UCB9, which provides a dual P-channel common-source MOSFET design.

The above features coupled with a chip-scale package footprint of just 1.8mm x 1.8mm and a thickness of <0.4mm, make this bi-directional MOSFET ideal for battery management, load switch and battery protection applications where smaller form factors are important, noted the company. Other features include a gate threshold voltage of less than 1V, which is important to fully enhance the channel under low voltage operation, and built-in gate protection against electrostatic discharge (ESD) voltages of >2kV.

Target end-markets for the devices include smartphones, tablets, cameras, portable media players, and similar consumer products where size, weight and battery life are all key performance factors.

The DMN2023UCB4 and DMP2100UCB9 are available for 10k piece quantities each.




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