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XR77129 - 40V Quad Output Digital PWM/PFM Universal PMIC

Description

The XR77129 is a quad channel digital Pulse Width Modulated (PWM) step down (buck) controller.

A wide 6V to 40V input voltage range allows for single supply operation from standard power rails.

Features

  • Quad Channel Step-down Controller  Digital PWM 105kHz-1.23MHz Operation  Individual Channel Frequency Selection  Patented digital PFM with Ultrasonic mode  Patented Over Sampling Feedback  Programmable 5 coefficient PID control  Integrated MOSFET Drivers.
  • 6V to 40V Input Voltage.
  • 0.6V to 5.5V Output Voltage (higher with external feedback resistors).
  • SMBus Compliant I2C Interface.
  • Full Power Monitoring and Reporting.
  • 3 x 15V Capable PSIO + 2 x GPIOs.
  • Full.

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Datasheet Details

Part number XR77129
Manufacturer MaxLinear
File Size 2.07 MB
Description 40V Quad Output Digital PWM/PFM Universal PMIC
Datasheet download datasheet XR77129 Datasheet

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Full PDF Text Transcription

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XR77129 40V Quad Output Digital PWM/PFM Universal PMIC General Description The XR77129 is a quad channel digital Pulse Width Modulated (PWM) step down (buck) controller. A wide 6V to 40V input voltage range allows for single supply operation from standard power rails. With integrated FET gate drivers, two LDOs for standby power and a 105kHz to 1.23MHz independent channel to channel programmable constant operating frequency, the XR77129 reduces overall component count, solution footprint and optimizes conversion efficiencies. A selectable digital Pulse Frequency Mode (PFM) capable of better than 80% efficiency at light current load and low operating current allow for portable and Energy Star compliant applications.
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