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XR76115

MaxLinear
Part Number XR76115
Manufacturer MaxLinear
Description 15A Synchronous Step Down COT Regulator
Published Sep 1, 2018
Detailed Description XR76115 15A Synchronous Step Down COT Regulator General Description The XR76115 is a synchronous step-down regulator co...
Datasheet PDF File XR76115 PDF File

XR76115
XR76115


Overview
XR76115 15A Synchronous Step Down COT Regulator General Description The XR76115 is a synchronous step-down regulator combining the controller, drivers, bootstrap diode and MOSFETs in a single package for point-of-load supplies.
The XR76115 has a load current rating of 15A.
A wide 5V to 22V input voltage range allows for single supply operation from industry standard 5V, 12V and 19.
6V rails.
With a proprietary emulated current mode Constant On-Time (COT) control scheme, the XR76115 provides extremely fast line and load transient response using ceramic output capacitors.
It requires no loop compensation, simplifying circuit implementation and reducing overall component count.
The control loop also provides 0.
25% load and 0.
12% line regulation and maintains constant operating frequency.
A selectable power saving mode allows the user to operate in discontinuous mode (DCM) at light current loads, thereby significantly increasing the converter efficiency.
A host of protection features, including over-current, overtemperature, short-circuit and UVLO, help achieve safe operation under abnormal operating conditions.
The XR76115 is available in a RoHS-compliant, green / halogenfree, space-saving QFN 6x6mm package.
Typical Application Figure 1: XR76115 Application Diagram VOUT (V) FEATURES • 15A capable step down regulator − 4.
5V to 5.
5V low VIN operation − 5V to 22V wide single input voltage − ≥0.
6V adjustable output voltage • Controller, drivers, bootstrap diode and MOSFETs integrated in one package • Proprietary Constant On-Time control − No loop compensation required − Ceramic output capacitor stable operation − Programmable 200ns - 2µs on-time − Quasi constant 200kHz - 800kHz frequency − Selectable CCM or CCM / DCM operation • Precision enable and Power-Good flag • Programmable soft-start • 6x6mm 37-pin QFN package APPLICATIONS • Distributed power architecture • Point-of-Load converters • Power supply modules • FPGA, DSP, and processor supplies • Base stations, switche...


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