AS3722 datasheet(2/199 Pages) AMSOSRAM

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[v1-01] 2015-Sep-07

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AS3722

Multi-Phase DCDC Controller PMIC

The AS3722 is a compact System PMU supporting up to 20 high

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

• Compact design due to small coils for IO and

memory voltage generation

• 4 DCDC step down regulators (3-4MHz)

• Output (0.6V-3.35V; 1x5A, 1x2A, 2x1.5A)

• High current generation with external power

stages to minimize PMIC power dissipation

• 3 DCDC step down controller

• DVM (0.6V-1.5V; 1x6A, 1x12A, 1x24A)

• Multiple independent voltage rails for general

purpose IO supplies

• 11 universal LDOs

• 9x universal IO range(0.8-3.3V; 0.3A)

• 1x low output range (0.6-1.5V; 0.3A)

• 1x extended input range (0.8-1.2V; 0.3A)

• Ultra low-power oscillator and no external caps

needed

• RTC

• 1μA total power consumption

• Programmable alarm

• Auto wake-up, repeating alarms

• 32kHz output to peripherals

General Description

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