TPS22946

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS22946 SLVS984B – SEPTEMBER 2009 – REVISED MARCH 2015 TPS22946 Ultralow Power, Low Input Voltage, Current-Limited Load Switch With Shutoff, Auto-Restart, and Overcurrent Condition Time-Out 1 Features 1 Ultralow Quiescent Current 1 μA (Typical) at VIN = 1.8 V Input Voltage Range: 1.62 V to 5.5 V Low ON-Resistance – rON = 300 mΩ at VIN = 5.5 V – rON = 400 mΩ at VIN = 3.3 V – rON = 500 mΩ at VIN = 2.5 V – rON = 600 mΩ at VIN = 1.8 V Selectable Minimum Current Limit: 155 mA, 70 mA, or 30 mA Integrated Inrush Current Time-out (8 ms) Shutdown Current: < 1 μA Thermal Shutdown Fault Blanking Auto Restart Overcurrent Condition Time-out (Automatic Disable for Permanent Overcurrent) 1.8-V Compatible Control Input ESD Performance Tested Per JESD 22 – 6000-V Human-Body Model (A114-B, Class II) Tiny DSGBA Package 1.4 mm × 0.9 mm (YZP) 2 Applications Fingerprint Module Protection Portable Consumer Electronics Mobile Phones Smartphones Notebooks GPS Devices 3 Description The TPS22946 is an ultralow power load switch that provides protection to systems and loads in highcurrent conditions. The device contains a 300-mΩ current-limited P-channel MOSFET that can operate over an input voltage range of 1.62 V to 5.5 V. The switch is controlled by an on/off input (ON), which can interface directly with low-voltage control signals. The TPS22946 includes thermal shutdown pr...