TPS2151IPWP

The TPS2151IPWP is an Adjustable LDO Plus Switch with dual current limit for high power USB peripherals. It is 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 turn-ON 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 turn-ON, the switch limits the current delivered to the capacitive load to less than 100mA. When the output voltage from the switch reaches about 93% of the input voltage, the switch power good output goes high and the switch current limit increases to 800mA minimum, at which point higher current loads can be turned-ON. The higher current limit provides short circuit protection while allowing the peripheral to draw maximum current from the USB bus.

• Complete power management solution for USB high-power peripherals
• Undervoltage lockout and power good for LDO and switch
• CMOS and TTL-compatible enable inputs
• 5µA Typical standby supply current
• Green product and no Sb/Br

Applications

Computers & Computer Peripherals, Consumer Electronics, Sensing & Instrumentation, Communications & Networking