移动I/O扩展和键盘控制器

ADI公司移动I/O扩展器系列非常适合智能电话及便携式设备,此类设计要求配有库存扫描器、医疗设备和抄表器等扩展大键盘和/或扩展I/O。便携式系统中的微处理器必须提供许多功能接口并加以控制,因而GPIO方面受到制约。而且其耗电量大,不适合执行去抖、轮询和按键扫描算法。ADI公司的移动I/O扩展器可以承担按键扫描和GPIO功能,从而减轻CPU的负担,让处理器去执行高优先级功能,以降低功耗。这样还能减少I/O线的数量,使PCB面积更小,并且布线更灵活。

产品选型表

移动I/O扩展器和键盘控制器

Part#Product DescriptionVin min (V)Vin max (V)Number of I/OsApplicationQWERTY KeypadOther FunctionsPackageUS Price 1000 to 4999
ADP5053 4-Channel Integrated Power Solution with Quad Buck Regulators with POR/WDI - - - - - - - $3.79
ADP5051 4-Channel Integrated Power Solution with Quad Buck Regulators, POR/WDI and I2C - - - - - - - $4.59
ADP5134 - - - - - - - - $2.09
ADP5052 5-Channel Integrated Power Solution with Quad Buck Regulators and 200mA LDO - - - - - - - $3.59
ADP5050 5-Channel Integrated Power Solution with Quad Buck Regulators, 200 mA LDO, 12C - - - - - - - $4.39
ADP5041 3 MHz Buck Regulator with Dual LDO, Supervisor and Watchdog Timer - - - - - - 24-Lead LFCSP $1.79
ADP5040 3 MHz, Buck Regulator with Dual LDO - - - - - - 24-Lead LFCSP $1.39
ADP5033 Dual 3Mhz Buck Regulator with Dual LDO - - - - - - - $1.90
ADP5043 3Mhz Buck Regulator with LDO, Supervisor and Dual Watchdog Timers - - - - - - 24-Lead LFCSP $1.79
ADP5042 3Mhz Buck Regulator with Dual LDO, Supervisor and Dual Watchdog Timers - - - - - - 24-Lead LFCSP $1.99
ADP2140 3 MHz, 600 mA, Low Quiescent Current Buck with 300 m - - - - - - 10-Lead LFCSP $1.20
ADP5587 - - - - - - - - $1.15
ADP2116 Configurable, Dual 3 A/Single 6 A, Synchronous, Step-Down DC-DC Switching Regulator - - - - - - 32-Lead LFCSP $2.50
ADP5030 Dual, 200 mA, High Performance RF LDO with Load Switch - - - - - - 16-Bump WLCSP $0.85
ADP5022 Dual 600mA Buck (with 150mA LDO) - - - - - - 20-Bump WLCSP $1.80
ADP2114Reference Circuit Available Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-DC Switching Regulator - - - - - - 32-Lead LFCSP $1.88
ADP5020Reference Circuit Available General Purpose PMU - - - - - - 20-Lead LFCSP $1.50
ADP5025 System PMU for Digital Still Cameras - - - - - - 64-Lead WLCSP -
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