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The FSA5157 is a low ON Resistance, low power Single PoleDouble Throw (SPDT) analog switch. This product has beendesigned for switching audio signals in applications such as cellphones and portable media players. The ultra-low 0.4 Ohmimpedance, sub 1A current consumption, and 1.65V to 4.3Voperating voltage range makes this product ideal for batterypower applications. The FSA5157 also features bi-directionaloperation and make-before-break functionality. This device isfully specified for operation at 1.8V, 2.5V and 3.3V.
A growing number of applications require the voltage applied tothe select input to be lower then the VCC applied. Under thiscondition, most switches would typically consume over 100Aof current. This would be an unacceptable level for battery poweredapplications. The FSA5157 has been designed to minimizecurrent consumption under this condition. The ICCT is specifiedfor <2A under a worse case condition of VCC = 4.3V and VIN = 1.8V.
FSA5157 Maximum Ratings
Supply Voltage (VCC).....................................-.5V to +4.6V Switch Voltage (VS) (Note 2)...............-0.5V to VCC + 3.0V Input Voltage (VIN) (Note 2).......................-0.5V to +4.6V Input Diode Current...............................................-50 mA Switch Current ......................................................350 mA Peak Switch Current (Pulsed at 1 ms duration, <0% Duty Cycle)........................... 500 mA Storage Temperature Range (TSTG)..........-65 to +150 Maximum Junction Temperature (TJ)...................... +150 Lead Temperature (TL) Soldering, 10 seconds............................................+260 ESD Human Body Model................................................. 8000V
FSA5157 Features
` Typical 0.4 On Resistance (RON) for +.7V supply ` FSA5157 features less than 12A ICCT currentwhen S input is lower than VCC ` 0.25 maximum RON flatness for +.7V supply ` 1.0mm x 1.45mm 6-Lead Pb-Free MicroPak package ` Broad VCC operating range: 1.65V to 4.3V ` Low THD (0.02% typical for 32 load) ` High current handling capability(350mA continuous current under 3.3V supply) ` Control logic is 1.8V CMOS logic compatible
FSA5157 Typical Application
· Cellular phone · PDA · Portable Media Player