Power Management for i.MX50/53 Processors

MC34709

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The MC34709 is a power management integrated circuit (PMIC) designed primarily for use with the i.MX 50 and i.MX53 families.

  • Offers a low cost solution targeting embedded applications that do not require a battery charger
  • Can be easily combined with an external charger, allowing flexibility for either single or multi-cell Li-Ion battery configurations
  • Supports both consumer and industrial applications with a single 130-pin 8x8 MAPBGA 0.5 mm pitch package that is easily routable in low cost board designs

Product Details

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Block Diagram

MC34709

MC34709 Block Diagram
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Features

Power Supplies

  • Six multi-mode buck regulators
    • Two single/dual-phase buck regulators
    • Three single-phase buck regulators
    • Up to six independent outputs
    • PFM/PWM operation mode
    • Dynamic voltage scaling
  • 5 V boost regulator
    • Support for USB physical layer on i.MX processor (USB PHY)
  • Eight LDO regulators
    • Two with selectable internal or external pass devices
    • Four with embedded pass devices
    • One with an external PNP device
    • Voltage reference for DDR memory with internal PMOS device
  • Hardware programmable power-up sequence

10-Bit ADC Core

  • Seven general purpose ADC channels
  • Dedicated channels for monitoring die temperature and coin cell voltage
  • Resistive touchscreen interface

Auxiliary Circuits

  • General purpose I/Os
  • PWM outputs

Clocking and Oscillators

  • Real time clock
  • Time and day counters
  • Time of day alarm
  • 32.768 kHz crystal oscillator
  • Coin cell battery backup and charger

Serial Interface

  • SPI / I2C communication protocol

Key Features

  • I2C interface and input control
  • i.MX35, i.MX37, i.MX50, i.MX51 and i.MX53 MCU supported

Documentation

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Design Resources

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Design Files

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  • Printed Circuit Boards and Schematics

    Design files for the KIT34709VKEVBE implementing all workarounds from MC34709 errata.

    ZIPRev BOct 25, 2012 00:00:002.6 MBDF34709_REVB
    Download

Hardware

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Engineering Services

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