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The AP2181A and AP2191A are integrated high-side power switches optimized for Universal Serial Bus (USB) and other hot-swap applications. This family of devices complies with USB 2.0 and is available with both polarities of Enable input. The AP2181A and AP2191A offer current and thermal limiting and short circuit protection as well as controlled rise time and undervoltage lockout functionality. A 7ms deglitch capability on the open-drain Flag output prevents false over-current reporting and does not require any external components.
All devices are available in SO-8, MSOP-8EP, SOT25 and U-DFN2018-6 packages
Over-Current and Thermal Protection
2.1A Accurate Current Limiting
Reverse Current Blocking
Input Voltage Range: 2.7V - 5.5V
0.6ms Typical Rise Time
Very Low Shutdown Current: 1μA (max)
Fault Report (FLG) with Blanking Time (7ms typ)
ESD Protection: 4kV HBM, 400V MM
Active High (AP2151A) or Active Low (AP2141A) Enable