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XR77128

MaxLinear
Part Number XR77128
Manufacturer MaxLinear
Description Quad Output Digital PWM/PFM Universal PMIC
Published Sep 1, 2018
Detailed Description XR77128 Quad Output Digital PWM/PFM Universal PMIC General Description The XR77128 is a quad channel digital Pulse Widt...
Datasheet PDF File XR77128 PDF File

XR77128
XR77128


Overview
XR77128 Quad Output Digital PWM/PFM Universal PMIC General Description The XR77128 is a quad channel digital Pulse Width Modulated (PWM) step down (buck) controller.
A wide 4.
75V to 5.
5V and 5.
5V to 25V 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 XR77128 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.
Each XR77128 channel’s output voltage is individually programmable down to 0.
6V with a resolution of 2.
5mV, and is configurable for precise soft start and soft stop sequencing, including delay and ramp control.
The XR77128 operations are fully controlled vi...


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