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DC-DC Converter

Delivers class leading low-consumption and high-efficiency. Contributes to improved conversion under light loads. Low-consumption, high-efficiency DC/DC converter IC MM3472



The <MM3472> delivers the world's leading class low-consumption and high-efficiency to meet market demands for longer continuous operating times and lower heat generation of cell phone devices.
The chief target devices are cell phones operating on 2 to 5 V power sources, and contribute to lower power consumption of the installed set.


  1. Low-consumption and high-efficiency (11µA consumption current).
    50µW self-consumption power during standby.
    Power savings of 20% or more compared to conventional products.
  2. PWM/PFM operation mode switching function.
    A lower noise PWM fixed mode and light load high-efficiency PWM/PFM mode can be selected at will to suit the design concept of the installed set.
  3. Space efficient.
    The package comes in a 2.0 × 2.0 mm SSON and SOT lineup.
    An oscillating frequency of 2.25 MHz allows a more compact inductor to be selected.

Main specifications

Input voltage range
Output voltage range
FB voltage (PWM mode)
FB voltage (PFM mode)
Output current capacity
Switching frequency
2.25MHz typ.
Consumption current (with switching stopped)
11µA typ.
Efficiency (VIN = 3.6 V, VOUT = 1.8 V)
Io=0.01mA @25%
Io=100mA @90%
Protection function
UVLO, current limit, thermal shutdown
Control method
Automatic PWM/PFM switching control
2.0 × 2.0 × 0.75 mm (SSON-6L)
2.9 × 2.8 × 1.15 mm (SOT-26A)

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