0.5A to 2.0A High-side Power Distribution Switches AP2822
Dec.
2012 Rev 1. 1 BCD Semiconductor Manufacturing Limited
1
General Description
The AP2822 is an integrated high-side power switch
that consists of N-Channel MOSFET, charge pump,
over current & temperature and other related protection
circuits. The switch’s low R
DS(ON)
, 85mΩ, is designed
to meet USB voltage drop requirements. The IC
includes soft-start to limit inrush current, over-current
protection, load short 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. A FLAG output is
available to indicate fault conditions to the local USB
controller.
The AP2822 is available in the standard package of
SOT-23-5.
Applications
• USB Power Management
•
USB Bus/Self Powered Hubs
• Hot-plug Power Supplies
• Battery-charger Circuits
• Notebooks, Motherboard PCs
Features
•
Low MOSFET On Resistance: 85mΩ
• Compliant to USB Specifications
• Available 4 Versions of Continuous Load:
0.
5A/1.0A/1.5A/2.0A
• Logic Level Enable Pin: Available with
Active-high or Active-low Version
• Operating Voltage Range: 2.7V to 5.5V
• Low Supply Current: 68µA (Typ.)
• Low Shutdown Current: 1.0µA (Max)
• Under-voltage Lockout
• Soft Start-up
• Over-current Protection
• Over Temperature Protection
• Load Short Protection with Fold-back
• No Reverse Current When Power Off
• Deglitched FLAG Output with Open Drain
• With Output Shutdown Pull-low Resistor
F
igure 1. Package Type of AP2822
SOT-23-5
