AP2821

Advance Datasheet High-side Power Distribution Switch with Enable AP2821 General Description The AP2821 is an integrated high-side power switch that consists of TTL compatible enables input, a charge pump, and N-Channel MOSFET. The switch’s low RDS (ON), 120mΩ, meets USB voltage drop requirements. It includes soft-start to limit inrush current, over-current protection with fold-back, and thermal shutdown to avoid switch failure during hot plug-in. Under voltage lockout (UVLO) function is used to ensure the device remain off unless there is a valid input voltage present. And no reverse current when power off, with shutdown pull-low resistor to discharge the output capacitor when EN is disable. The AP2821 is available in standard package of SOT-23-5. Features Low MOSFET on Resistance: 120mΩ @VIN=5.0V Compliant to USB Specifications Operating Voltage Range: 2.7V to 5.5V Low Supply Current: 35μA (Typ.) Low Shutdown Current: <1μA Current Limit with Fold-back: 2A Under-voltage Lockout Soft Start-up Over-current Protection Over Temperature Protection Load Short Protection with Fold-back No Reverse Current when Power off Pass System ESD: IEC61000-4-2 ± 16KV (Air Discharge) and ± 8KV (Contact Discharge) on USB Connector Applications USB Power Management USB Bus/Self Powered Hubs Hot-plug Power Supplies Battery-charger Circuits Notebooks, Motherboard PCs Mar. 2013 Rev 2. 0 SOT-23-5 Figure 1. Package Type of AP2821 BCD Semiconductor Manufacturi...