Mobile I/O Expander and Keypad Controller

Analog Devices' family of mobile I/O expanders are ideal for SmartPhone designs and portable devices that require a large extended keypad and/or expanded I/Os such as inventory scanners, medical equipment, and meter readers. Microprocessors in portable systems are GPIO constrained due to the number of functions they must interface with and control. They are also power hungry making them inefficient for de-bouncing, polling and key press scanning algorithms. ADI’s family of mobile I/O expanders offloads key-scan and GPIO functions from the CPU, freeing up the processor for higher priority functions resulting in energy savings. They also reduce the number of I/O lines which resulting in smaller PCB area and flex cables.

Have questions about ADI's Interface and Isolation products? Visit the Interface and Isolation Support Community on EngineerZone.

PRODUCT SELECTION TABLES

Mobile I/O Expander-Keypad Controller

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 600mA Buck with 300mA LDO - - - - - - 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 LDO (Vout=1.2V, 2.8V) w/ 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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