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DC/DC Converter with Switching FET + I2C

S6AP412A 3-channel DC/DC Converter with I2C interface, available for multi-phase method

Datasheet

Supply multiple power rails for CPU/ASIC/FPGA by single PMIC

Description

  • Apply small inductor by Multiphase method High efficiency even at heavy load
  • Easy start-up sequence design with good-power status signal output, dedicated enable hard-pin and I2C Interface
  • Preset Output Voltage Lineup
  • Apply DVS/ASV by I2C Interface *1
  • Reduce external parts by internal output setting resistor and phase compensation circuit
*1 ASV: Adaptive Supply Voltage
   DVS: Dynamic Voltage saving

Features

  • Power supply voltage range:2.5V to 5.5V
  • Adjustable output voltage rangeOutput current(max)
      DCDC1 (Buck) : 0.7V to 1.32V (20mV/step)、4.0Amax
      DCDC2 (Buck): 1.2V to 1.95V (50mV/step) 、1.2Amax
      DCDC3(Buck/Boost): 2.8V to 3.5V (100mVstep), 0.6Amax
      ※Each channel has selective preset voltage
  • Adjustable soft-start time range:
      1ms to 16ms(1ms/step)*2
  • Operating frequency : 3MHz
  • I2bus interface
  • PFM function
  • Switching frequency: 3MHz (fixed)
  • Protection : Over current, Thermal shutdown
  • Good-power status output pin, dedicated control pin
      (Output voltage detect)
  • Built-in discharge resistor
  • PKG: QFN32
*2 At 1.0V/1.8V/3.3V output voltage setting

Application

  • Network equipment
  • Factory automation
  • Security system
  • Surveillance camera
  • Electrical music instrument
  • Multi-function printer
  • Scanner, Printer, Copy machine
  • Home appliances
  • Data-storage device(HDD, SSD)
  • Mobile equipment for Li+ battery (1 cell)

 

Application circuit example

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Different Sequence by the same circuit

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2-channel Buck Converter + 1-channel LDO with I2C interface

Datasheet

Programmable PMIC for MCU, FPGA, and Memory

Description

MB39C031 is a programmable power management IC which consists 2-channel Buck DC/DC converter and 1-channel LDO. By using I2C, adjusting output voltage/start up time / start-up sequence become easy. The power design can be changed by software without re-designing PCB. Each channel has powergood function, and the setting of the start-shutdown sequence with hardware is also as usual possible. This IC is suitable for the system required for three power-supplies.

Features

  • Power supply voltage range:2.5V to 5.5V
  • Adjustable output voltage range、Output current(max)
      DCDC1: 1.0V to 1.3V(20mV/step)、1.4A(DC)
      DCDC2: 1.2V to 1.95V(50mV/step)、0.6A(DC)
      LDO: 2.8V/2.85V/3.0V/3.3V、0.25A(DC)
      ※Each channel has selective preset voltage
  • Adjustable soft-start time range:
      0.9ms~14.3ms(約0.9ms/step)
  • Operating frequency: 3MHz
  • I2bus interface
  • Possible to select the automatic PFM/PWM selection mode
    or PWM-fixed mode
  • Protection: UVLO, Over current, Over temperature
  • PKG: QFN28
      (4mm×4mm×0.8mm, 0.4mm pitch)

Application

  • Network equipment 
  • Data-storage device
  • Image and voice output equipment
  • Various terminals

 

Application circuit example

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Application example of MB39C031

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Online Design Simulator "Easy DesignSim™"

MB39C022 Series 1-channel DC/DC Buck Converter IC + 1-channel Low-Noise LDO + POR

Datasheet

For Portable Devices with digital circuits and with analog circuits

Description

An optimal IC for power management systems in portable devices with one built-in channel of DC/DC step-down converter for digital circuits and one built-in channel of low-noise LDO for analog circuits. Two power management systems is in a 10-pin package of 3.0mm×3.0mm.The built-in switching FET enable the construction of a power management system at a low BOM cost. There are four variations of the fixed output voltage in the LDO block.

Features

  • Power supply voltage range: 2.5V to 5.5V Supporting 1-cell Li-ion Battery
  • Function of DC/DC circuit:
      PFM/PWM mode: Improving efficiency under light load
      Current mode: High-speed load response
  • Output voltage/current of DC/DC block:
      Voltage setting range: 0.8V to 4.5V
      Current: 600mA (Max.)
  • Output voltage/current of LDO block:
      Output voltage (fixed): 3.3V(MB39C022G), 2.85V(MB39C022J), 1.8V(MB39C022L), 1.2V(MB39C022N)
      Current: 300mA (Max.)
  • Power on Reset (POR)
  • Package: SON-10
    3.0mm×3.0mm×0.75mm (lead pitch 0.5mm)

Application

  • Portable applications
  • GPS, PND
  • MP3, PMP
  • Portable TV, USB dongle (CMMB, DVB-T, DMB-T)
  • SMART-PHONE, etc.
 

MB39C316 3-channel DC/DC Converter + 4-channel LDO

Datasheet

Supporting 1-cell Li-ion Battery

Description

MB39C316 is a power management IC equipped with 3ch DC/DC converter and the 4ch linear regulator (LDO). MB39C316 operate in the range of power supply voltage with 1-cell Li-ion power by 1ch buck boost DC/DC converter of high efficiency, and has 4ch LDO which is suitable to supply voltage for mobile terminals.

Features

  • Power supply voltage range: 2.7V to 5.5V
  • Sequence control: On/Off control of power supply voltage
  • I2bus interface: Control and notice of internal condition
  • RTC: Possible to output the 32.768kHz clock by connecting crystal oscillator

Application

  • Portable Products such as PDA
  • Mobile WiMAX terminals
    *: MB39C316 consist of the chipset for Mobile WiMAX terminals with MB86K22 (BaseBand) and MB86K52 (RF).
 

Explanation of a Functional Display