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Diodes' miniature overvoltage clamp for power ICs

Posted: 03 Aug 2012 ?? ?Print Version ?Bookmark and Share

Keywords:overvoltage clamp? power management ICs? AP9060?

Diodes Inc. has introduced an overvoltage clamp for the protection of power management ICs (PMIC) in portable applications.

The AP9060, despite its small form factor 1.1mm x 1.4mm x 0.8 mm W-DFN1114-3 packaging, supports a wide battery charger output range of 3V to 30V. It will pass the voltage through to the PMIC only up to a safe clamp voltage limit, factory set at 11V.

Its employment of ultra-low bias current minimizes self-heating and its feedback loop maintains the clamped output voltage level by backing off the drive to its p-channel MOSFET switch.

Additionally, the AP9060's usage of a low resistance p-channel MOSFET through noise generation reduction on the input supply circuit lessens the chances of EMI issues.

It will also support reverse-current operation, allowing it to facilitate passing of up to 1A from the PMIC to a load connected to a USB port. This process passes the requirement of USB On-The-Go (OTG) enabled products.

The device is apt for the latest battery-backed products such as smart phones, tablets and ultra-mobile PCs.





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