General Description
The MAX4914B/MAX4915A/B/MAX4917A/B family of switch es feature internal current limiting to prevent damage to host devices due to faulty load conditions. These analog switches have a low 0.2Ω on-resistance and operate from a 2.3V to 5.5V input voltage range. They are available with guaranteed 100mA, 200mA, and 300mA 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 that the transient voltages settle down. If after this blanking time the load current is greater than the current limit, the MAX4914B/MAX4915B/MAX4917B latchoff versions enter a latchoff state where the switch is turned off and FLAG is issued to the microprocessor. The switch can be turned on again by cycling the power or the ON pin.

FEATUREs
♦ Guaranteed Current Limit: 100mA, 200mA, 300mA
♦ Thermal-Shutdown Protection
♦ Reverse Current Protection
♦ 0.2Ω On-Resistance
♦ 14ms Guaranteed Blanking Time
♦ FLAG Function
♦ 80µA Supply Current
♦ 8µA Latchoff Current (MAX4914B/MAX4915B/MAX4917B)
♦ Autoretry (MAX4915A/MAX4917A)
♦ 0.01µA Shutdown Current
♦ 2.3V to 5.5V Supply Range
♦ Undervoltage Lockout
♦ Fast Current-Limit Response Time (5µs)
♦ Low (0.1µA typ) Reverse Shutdown Current
♦ Tiny 6-Pin µDFN (2mm x 2mm) and 5-Pin SOT23 Packages

APPLICATIONs
PDAs and Palmtop
Devices
Cell Phones
GPS Systems
Handheld Devices
SDIO
USB Ports
Notebook Computers