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33730 - Switch Mode Power-Supply

Description

Reset detect circuitry Improved VDDL and VDD3 reset detect circuitry 33730 2 Analog Integrated Circuit Device Data Freescale Semiconductor INTERNAL BLOCK DIAGRAM INTERNAL BLOCK DIAGRAM VBAT VBAT KA_VBAT VKAM CP PFD REG ON VIGN IGN_ON VREF1 VREF2 P1 P2 P3 RSTKAM RSTH RST3 RSTL UVLO /OVLO Feed

Features

  • Provides all regulated voltages for Freescale 32-bit microcontroller family.
  • Adjustable frequency switching buck regulator with slew-rate control.
  • Power sequencing provided.
  • Programmable voltages VDDL, VDD3 - 3% accuracy.
  • Programmable standby regulator VKAM - 15% accuracy, operating down to 4.5 V at the KA_VBAT pin.
  • VDD3 can be programmed as an optional second standby regulator with 15% accuracy.
  • Provides two 5.0 V protected supplie.

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Datasheet preview – 33730

Datasheet Details

Part number 33730
Manufacturer NXP
File Size 1.16 MB
Description Switch Mode Power-Supply
Datasheet download datasheet 33730 Datasheet
Additional preview pages of the 33730 datasheet.

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Full PDF Text Transcription

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Freescale Semiconductor Advance Information Document Number: MC33730 Rev. 9.0, 8/2012 Switch Mode Power Supply with Multiple Linear Regulators 33730 The 33730 is a multiple output power supply integrated circuit for automotive applications. The integrated circuit (IC) incorporates a switching regulator, which operates over a wide input voltage range from 4.5 to 26.5 V. The step-down switching regulator uses a fixed frequency pulsewidth modulation (PWM) voltage mode control. It has a 3.5 A current limit (typical) and the slew-rate is adjustable via a control pin to reduce switching noise. The switching regulator has an adjustable frequency oscillator, which allows the user to optimize its operation over a wide range of input voltages and component values.
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