Diodes' miniature overvoltage clamp for power ICs

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.