AS3722 Multi-Phase DCDC Controller PMIC The AS3722 is a compact System PMU supporting up to 20 high General Description current rails. The device offers advanced power management functions. All necessary ICs and peripherals in a battery powered mobile device are supplied by the AS3722. It features 4 DCDC buck converters as well as 11 low noise LDOs. The different regulated supply voltages are programmable via the serial control interface. 3-4MHz operation with 0.47uH coils is reducing cost and PCB space. AS3722 further features 3 DCDC buck controller which are ideal to support processor currents ranging from 5A up to 32A depending on the used power stages. The multi-phase topology operating on 3MHz ensures fast load transient responses and reduces the footprint for external components. The single supply voltage may vary from 2.7V to 5.5V. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of AS3722, Multi-Phase DCDC Controller PMIC are listed below: Figure 1: Added Value of Using AS3722 Benefits Features 4 DCDC step down regulators (3-4MHz) Compact design due to small coils for IO and memory voltage generation Output (0.6V-3.35V 1x5A, 1x2A, 2x1.5A) 3 DCDC step down controller High current generation with external power stages to minimize PMIC power dissipation DVM (0.6V-1.5V 1x6A, 1x12A, 1x24A) 11 universal LDOs 9x universal IO range(0.8-3.3V 0.3A) Multiple independent voltage rails for general purpose IO supplies 1x low output range (0.6-1.5V 0.3A) 1x extended input range (0.8-1.2V 0.3A) RTC 1A total power consumption Ultra low-power oscillator and no external caps Programmable alarm needed Auto wake-up, repeating alarms 32kHz output to peripherals ams Datasheet Page 1 v1-01 2015-Sep-07 Document FeedbackAS37 22 Gene ral Des c rip t ion Benefits Features Supervisor with interrupt generation and selectable warning levels Automatic battery monitoring Safe supervision in HW which works also without a processor Automatic temperature monitoring Automatic over-current monitoring Power supply supervision for DCDC General Purpose IOs ADC input Flexible multi-purpose IOs for general control Wake-up/stand-by input tasks PWM input/output Low battery and power good status Enables the processor to check the actual system ADC with internal and external sources state in detail Flexible and fast adaptation to different OTP programmable Boot and Power-down processors/applications sequence Power saving control according to the processor Stand-by function with programmable sequence needs and voltages Control Interface I2C/SPI control lines with watchdog Self-contained start-up and control for single and multi-cell battery applications. Safety shutdown ONKEY with 4/8s emergency shut-down feature POR with RESET I/O 5V pre-regulator enable Package Dedicated packages for specific applications. 124-pin CTBGA (8x8mm), 0.5mm pitch Optimization for PCB cost or size 108-pin WL-CSP (4.8x3.6mm), 0.4mm pitch Applications The device is suitable for: Mobile Phones Tablet PCs NetBooks Portable Media Players Portable Navigation Devices Mobile Internet Devices Page 2 ams Datasheet Document Feedback v1-01 2015-Sep-07