XR77129 Datasheet PDF

MaxLinear XR77129

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

Part No.	XR77129
Datasheet	XR77129 Download
Manufacturer	MaxLinear
Description	40V Quad Output Digital PWM/PFM Universal PMIC
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GENERAL DESCRIPTION

A wide 6V to 40V input voltage range allows for single supply operation from standard power rails. 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. The XR77129 operations are fully controlled via a SMBus-compliant I2C interface allowing for advanced local and/or remote reconfiguration, full performance monitoring and reporting as well as fault handling. Built-in independent output Over-Voltage, Over-Temperature, OverCurrent and Under-Voltage Lockout protections insure safe operation under abnormal operating conditions. The XR77129 is offered in a RoHS compliant, “green”/halogen free 44-pin TQFN package.

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 coeff...

XR77129 Datasheets by Manufacturer

1 datasheets

Part Number	Manufacturer
XR77129	Exar Corporation