Mains disconnection devices

27 April 2011 Circuit & System Protection

The AP9050 from Diodes Incorporated is a dedicated protection interface designed to protect the latest generation of power management ICs (PMICs) against over-voltages.

Comprising an LDO regulator and an n-channel power FET, the device controls supply current delivery to the PMIC, switching it on in the presence of a valid wall adapter or USB supply voltage and immediately off in the event of any over-voltage detection.

With an input supply range of 3 V to 30 V, the device will safeguard a variety of portable products including smartphones, cellphones and netbooks. Employing multidie technology and a dual exposed pad DFN2020-6 package, it offers lower power dissipation and higher efficiency than alternative Zener shunt regulator solutions, resulting in less heating and improvements in overall system reliability.

Offering high stability, the AP9050 does not require a bypass capacitor on the output and operates consistently across the temperature range of 40°C to +85°C. With a maximum footprint of 2,1 x 2,1 mm and a typical off-board height of 0,575 mm, the device will support densely populated PCB designs.

For more information contact Robin Scholes, Avnet Kopp, +27 (0)11 809 6100, [email protected], www.avnet.co.za

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