AMS2027

Advanced Monolithic Systems AMS2027 SINGLE POWER DISTRIBUTION SWITCH RoHS compliant PRELIMINARY INFORMATION FEATURES 110mΩ Typical (5V Input) High Side MOSFET Switch Short Circuit Protection Logic Overcurrent Output Error Flag Logic Undervoltage Output Error Flag Logic Overheat Output Error Flag Enable Input Compatible With 3V and 5V Logic Controlled Rise and Fall Times Limit Current Surges and Minimize EMI Undervoltage Lock-Out Guarantees the Switch is Off At Start-up 100µA Maximum On-State Supply Current Available Active-High or Active-Low Enable Available in Space Saving 8 lead SOIC and 8 Lead PDIP APPLICATIONS USB Power Management Hot Plug-In Power Supplies Battery-Charger Circuits PRODUCT DESCRIPTION The AMS2027 is a power distribution switch intended for application where heavy capacitive loads and short-circuits are likely to be encountered. The high-side switch is a 110mΩ N-channel MOSFET. The switch is controlled by a logic enable input compatible with 3V and 5V logic and is available in active-high or active-low enable. The internal charge pump, designed to control the power switch rise and fall time to minimize current surges during switching, also provides the gate drive. Requiring no external components the charge pump allows operation from supplies as low as 3.3V. When an overload or a short circuit is encountered the AMS2027 limits the output current to a safe level by switching into a constant-current mode and the overcurrent lo...