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3A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator

The ISL8013A is a high efficiency, monolithic, synchronous step-down DC/DC converter that can deliver up to 3A continuous output current from a 2.8V to 5.5V input supply. It uses a current control architecture to deliver very low duty cycle operation at high frequency with fast transient response and excellent loop stability.

Features

? High efficiency synchronous buck regulator with up to 97 efficiency

? Power-good (PG) output with a 1ms delay

? 2.8V to 5.5V supply voltage

? 3 output accuracy over temperature, load, line

? 3A output current

? Start-up with prebiased output

? Internal soft-start - 1ms

? Soft-stop output discharge during disable

? 35μA quiescent supply current in PFM mode

? Selectable forced PWM mode and PFM mode

? External synchronization up to 4MHz

? Less than 1μA logic controlled shutdown current

? 100 maximum duty cycle

? Internal current mode compensation

? Peak current limiting and hiccup mode short-circuit protection

? Over-temperature protection

? Small 16 Ld 4mmx4mm QFN

? Pb-Free (RoHS compliant)

Applications

? DC/DC POL modules

? μC/μP, FPGA and DSP power

? Plug-in DC/DC modules for routers and switchers

? Portable instruments

? Test and measurement systems

? Li-ion battery powered devices

? Small form factor (SFP) modules

? Barcode readers