AAT4620 - Skyworks

AAT4620 PCMCIA Current Limit Interface and Capacitor Charger

The AAT4620 SmartSwitch is a current limited P-channel MOSFET power switch designed for high-side loadswitching applications in PCMCIA GSM/GPRS/3G modem cards. Used in conjunction with a super capacitor, the AAT4620 will ensure that the power ratings of the PCMCIA host are not exceeded at any time. Featuring two independent, programmable current limits and a.

Features

• VIN Range: 3.0V to 5.5V
• Dual Independent Current Limits ▪ 100mA to 1200mA ▪ ±10% Current Accuracy ▪ 20°C Temperature Band
• Reverse Current Blocking Protection
• Power Loop
• Low Quiescent Current ▪ 40μA Typical ▪ 1.0μA Max with Switch Off
• 65m Typical RDS(ON) at 3V
• Only 1.4V Needed for Enable Control Pin
• System READY Output with Externally Programmable Hysteresis
• Under-Voltage Lockout
• Temperature Range: -40°C to 85°C
• 12-Pin TSOPJW Package Applications
• CF Card Port Power Protection
• Express Card GSM/GPRS/3G Modems
• Hot Swap Supplies
• PCMCIA Card GSM/GPRS/3G Modems
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