Microchip Technology

MIC2826 Quad Output PMIC

Quad Output PMIC with HLL™ DC/DC, 3 LDOs and I2C control from Microchip

Image of Micrel's MIC2826 Quad Output PMICMicrochip's MIC2826 is a four output, programmable power management IC, optimized for high efficiency power support in mobile application processors, co-processors, DSPs, GPS and media player chipsets. The device integrates a single 500 mA PWM/PFM synchronous buck (step-down) regulator with three low dropout regulators and a 400 kHz I2C interface that provides programmable dynamic voltage scaling (DVS), power sequencing, and individual output enable/disable controls allowing the user to optimally control all four outputs.

Features Applications
  • Fast-mode I2C control interface
  • Tiny 14-pin 2.5 mm x 2.5 mm MLF® package
  • Default start-up voltage states and sequencing
  • Fault indication processor flag - IRQb
  • -40°C to 125°C junction temperature range
  • Thermal shutdown and current-limit protection
  • Power On After Fault (POAF) function
  • Application processors
  • GPS subsystems
  • General purpose PMIC
  • Mobile phones/PDAs
  • Portable media players
  • Mobile television receivers
DC-DC Synchronous Buck LDOs
  • 2.7 V to 5.5 V input voltage range
  • 500 mA continuous output current
  • HyperLight Load™ mode
    • 25 µA quiescent current
  • 90% peak efficiency; 85% at 1 mA
  • Ultra-fast transient response
  • Dynamic Voltage Scaling (DVS) range: 0.8 V to 1.8 V
    • 0.8 V to 1.2 V in 25 mV steps
    • 1.2 V to 1.8 V in 50 mV steps
  • ±2% initial accuracy
  • Low output voltage ripple: 20 mVpp in HyperLight Load™ mode, 3 mV in full PWM mode
  • 1.8 V to VDVIN input voltage range
  • 150 mA output current (each LDO)
  • Dynamic Voltage Scaling (each LDO)
    • DVS range: 0.8 V to 3.3 V in 50 mV steps
  • ±2% initial accuracy
  • Low quiescent current - 50 µA (each LDO)
  • Low dropout voltage - 50 mV at 50 mA
  • Low output noise - 45 µVRMS
  • Stable with ceramic output capacitors
  • 65 dB PSRR at 1 kHz

 

發佈日期： 2009-11-25

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