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MC34703 - Switch-Mode Power Supply

Datasheet Summary

Description

of each pin can be found in the Functional Pin Description section beginning on page 15.

Pin Number 1 Pin Name Pin Function Input Formal Name Boost Voltage Definition Input for internal boost regulator.

Features

  • for use with high power processors and controllers, including power-up and power-down sequencing of the I/O and core supply voltages in relation to each other. Features.
  • Wide input Operating Voltage Range: 2.8 V to 13.5 V.
  • Adjustable Output Voltages.
  • Continuous Core Voltage Supply Currents up to 10 A (with infrequent excursions to 12 A permitted).
  • Undervoltage Lockout.
  • Selectable Power Sequencing.
  • Programmable Watchdog Timer.
  • Voltage.

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Datasheet preview – MC34703

Datasheet Details

Part number MC34703
Manufacturer Freescale Semiconductor
File Size 1.75 MB
Description Switch-Mode Power Supply
Datasheet download datasheet MC34703 Datasheet
Additional preview pages of the MC34703 datasheet.

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Full PDF Text Transcription

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Freescale Semiconductor Technical Data Document Number: MC34703 Rev. 5.0, 8/2006 10A+ Switch-Mode Power Supply with LDO Regulator The 34703 integrated power supply IC is designed to support the PowerQUICC™ family of MCUs as well as other MCUs and DSPs requiring a high current core supply. The 34703 incorporates a highperformance switching regulator for the microprocessor’s core supply, and a low-dropout (LDO) linear regulator control circuit to provide I/O and bus voltage. The switching regulator is an efficient synchronous buck converter with integrated low RDS(ON) high side and low side FETs. Temperature and current sensing is built in and provides protection for the IC as well as the external circuitry.
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