DESCRIPTION
●The TPS2140/41/50/51 is a USB 1.0 and 2.0 Specification-compatible IC containing a dual-current limiting power switch and an adjustable low dropout regulator (LDO). Both the switch and LDO limit inrush current by controlling the turnon slew rate. The unique dual-current-limiting feature of the switch allows USB peripherals to utilize high-value capacitance at the output of the switch, while keeping the inrush current low. During turnon, the switch limits the current delivered to the capacitive load to less than 100 mA.
●FEATURES
●Complete Power Management Solution for USB High-Power Peripherals
●250 mA Low-Dropout Regulator (LDO) With Enable and 325 mA (Typ) Current Limit
●LDO Supports 2.7V to 5.5V VIN and 0.9V to 3.3V Adjustable VOUT
●40 mΩ(Typ) High-Side MOSFET With Dual Current Limit
●Undervoltage Lockout and Power Good for LDO and Switch
●CMOS- and TTL-Compatible Enable Inputs
●85 µA (Typ) Supply Current
●5 µA (Typ) Standby Supply Current
●Available in 14-Pin HTSSOP (PowerPAD™)
●–40°C to 85°C Ambient Temperature Range
●Alternative to TPS2148/58 3.3-V LDO With 3.3-V Switch and 5-V Switch
