General Description
The UM3699A are dual independent ultra low RON DPDT analog switches. These devices are designed for low operating voltage, high current switching of speaker output for cell phone applications. They can switch a balanced stereo output and can handle a balanced microphone/speaker/ring−tone generator in a monophone mode. 

FEATUREs
● Single Supply Operation: 1.65V to 5.5V
● Function Directly from Battery
● Maximum Breakdown Voltage: 6 V
● Low Static Power
● Tiny 3.0mm×3.0mm QFN16 Pb-Free
   Package

APPLICATIONs
● Cell Phone Speaker/Microphone
   Switching
● Ring-Tone Chip/Amplifier Switching
● Four Unbalanced (Single-Ended)
   Switches
● Stereo Balanced (Push-Pull) Switching