Maxim Integrated MAX4797ETT T

Description
The MAX4795-MAX4798 family of switches feature internal current limiting to prevent damage to host devices due to faulty load conditions. These analog switches have a low 0.20 on-resistance and operate from a 2.0V to 4.5V input voltage range. They are available with guaranteed 450mA and 500mA current limits, making them ideal for SDIO and other load-switching applications.
When the switch is on and a load is connected to the port, a guaranteed blanking time of 14ms ensures the transient voltages settle down. If after this blanking time, the load current is greater than the current limit, the MAX4795 and MAX4797 switches are turned off and FLAG is issued to the microprocessor. The switch can be turned on again by cycling the power or the ON input.
The MAX4796 and MAX4798 have an autoretry feature where the switch turns off and issues a FLAG to the microprocessor after the blanking time and then continuously checks to see if the overload condition is present. The switch remains on after the overload condition disappears and FLAG deasserts.
The MAX4795-MAX4798 are available in tiny, space-saving, 5-pin SOT23 and 6-pin TDFN (3mm x 3mm) packages.

Features
Guaranteed Current Limit: 450mA and 500mA
Thermal-Shutdown Protection
Reverse-Current Protection
0.22 On-Resistance
14ms Guaranteed Blanking Time
FLAG Function
Autoretry (MAX4796/MAX4798)
80μA Supply Current
6μA Latchoff Current (MAX4795/MAX4797)
0.01μA Shutdown Current
2V to 4.5V Supply Range
Fast Current-Limit Response Time
Tiny SOT23 and TDFN Packages
UL Certification Pending

Applications
SDIO
PDAs and Palmtop Devices
Cell Phones
GPS Systems
Hand-Held Devices