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AS3722 Power Management Unit

4 Buck DC-DC, 24A DC-DC Controller, 12 LDOs, General Purpose ADC

The programmable power management unit AS3722 features 4x DCDC buck converters, 3x buck converter (6A to 24A) and 11 low noise LDOs. The high level of integration and the 4MHz switching frequencies ensure small system footprint.

Block diagram of the AS3722 Power Management Unit

Key Features

  • 4 DCDC step down regulators (3-4MHz)
  • 3 DCDC step down controller with automatic phase shedding
  • 11 universal LDOs (one with DCDC tracking feature)
  • Low power real time clock (<1uA)
  • Programmable stand-by sequence

Key Benefits

  • Compact design due to small coils for IO and memory voltage generation
  • High current generation with external power stages to minimize PMIC power dissipation
  • Multiple independent voltage rails for general purpose IO supplies

AS3722 Applications

  • Tablet PCs
  • Netbooks
  • Portable Media Players
  • Solid State Disk Drives
  • Embedded Systems

AS3722 Product Facts

DC-DC step up converters [ ]
DC-DC step down converters 8phase + 2phase + 2phase + 4A +2A + 2x1.5A
Special LDOs [mA]
Universal LDOs [mA] 12 x 300
Current sinks [mA]
Charge pump [V/mA]
Audio DAC
Audio ADC
Audio features
General purpose ADC 10bit, 12 channel
Customizable startup sequences programmable
Package BGA-124 (8x8mm)