TPS22949

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS22949, TPS22949A SLVS908D – FEBRUARY 2009 – REVISED JUNE 2015 TPS22949x Current-Limited Load Switch With Low Noise Regulation Capability 1 Features 1 Integrated Current Limiter – Input Voltage Range: 1.62 V to 4.5 V – Low ON-Resistance – rON = 300-mΩ at VIN = 4.5 V – rON = 350-mΩ at VIN = 3.3 V – rON = 400-mΩ at VIN = 2.5 V – rON = 600-mΩ at VIN = 1.8 V – Integrated 100-mA Minimum Current Limit – Undervoltage Lockout – Fast-Current Limit Response Time – Integrated Fault Blanking and Auto Restart Stable Without Current Limiter Output Capacitor (TPS22949A Only) Integrated Low-Noise RF LDO – Input Voltage Range: 1.62 V to 4.5 V – Low Noise: 50 μVrms (10 Hz to 100 kHz) – 80-dB VIN PSRR (10 Hz to 10 kHz) – Fast Start-Up Time: 130 μs – Low Dropout 100 mV at Iload =100 mA – Integrated Output Discharge – Stable With 2.2-μF Output Capacitor 1.8-V Compatible Control Input Threshold ESD Performance Tested Per JESD 22 – 3500 V Human Body Model (A114-B, Class II) – 1000 V Charged Device Model (C101) Tiny 8-Terminal YZP Package (1.9 mm × 0.9 mm, 0.5-mm Pitch, 0.5-mm Height) and WSON-8 (DRG) 3.0 mm × 3.0 mm 2 Applications Fingerprint Module Protection Portable Consumer Electronics Smart Phones Notebooks Control Access Systems 3 Description The TPS22949 and TPS22949A are devices that provide protection to systems and loads in highcurrent conditions. The device contains a 500-mΩ...