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U6229B - DC/DC Converter - Power Supply 28 V

General Description

The U6229B is a multifunctional power supply IC which provides four different voltages dedicated to supply components of complex microcontroller systems.

Key Features

  • D Voltage outputs.
  • 28.4-V step-up converter with I 1.2 A.
  • 7-V step-down converter with I 400 mA.
  • 5-V logic supply with I 14 mA.
  • 5-V reference voltage with I 14 mA v v v v D Analog input VKL15.
  • Energy-reserve mode switches off the step-up converter at VBatt < 5.25 V.
  • Controls start-up behavior D Logic output NRES.
  • N-reset output with over/ under voltage monitoring of both 5-V supplies D Logic input ENABLE.
  • Enables the st.

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Full PDF Text Transcription (Reference)

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www.DataSheet4U.com U6229B DC/DC Converter – Power Supply 28 V Description The U6229B is a multifunctional power supply IC which provides four different voltages dedicated to supply components of complex microcontroller systems. Supplied by a battery voltage in the wide range from 6 V to 26 V, the U6229B generates typically 28.4 V with a step-up converter, PWM, external power MOSFET and 150 m H inductivity. This voltage is fed to a step-down converter with external 150 m H inductivity to generate a 7-V auxiliary voltage with a small ripple. By means of this voltage, two linear regulators with only a small power dissipation provide a constant 5-V (±3%) supply for microcontrollers and an even more accurate 5-V (±2%) supply as a reference for sensors and a/d converters.