G528A

Typical 110m, Low MOSFET on resistance, at 5.0V  

3.0V to 5.5V operating range  

100 A typical on-state supply current  

1A typical standby supply current  

Output can be forced higher than input when operating in off state.  

1.4A Typical current limit  

Thermal shutdown protection  

2.4V typical under-voltage lockout (UVLO)  

Open-drain fault flag pin  

Slow turn-on (soft-start) and fast turnoff  

Logic level enable pin, available with active-low version (G528), or available with active-high version (G528A)  

UL Approved_#E232223

High-side power protection switch  

USB power management  

USB host and self-powered hubs  

USB Bus-powered hubs  

Hot plug-in power supplies  

Battery-charger circuits

The G528/G528A is an integrated high-side power switch optimized for self-powered and bus-powered Universal Serial Bus (USB) applications.

The G528/G528A satisfies the USB standards. The switch's low on-resistance meets USB voltage drop requirements. When the output load exceeds cur-rent-limit threshold, G528/G528A switches into con-stant-current mode and limit the output current to a safe level, which is typically 1.4A. An open-drain flag output is also available to indicate fault conditions to the local USB controller. Soft start eliminates the mo-mentary voltage drop on the upstream port that may occur when the switch is enabled in bus-powered applications.

Besides, a thermal shutdown circuit of G528/G528A is included to prevent catastrophic switch failure caused by increas-ing power dissipation when continuous heavy loads or short circuit occurs. A under-voltage lockout (UVLO) circuit ensures that the G528/G528A remains off unless there is a valid input voltage present, and an enable input that is compatible with both 3.3V and 5V logic.