Renesas Electronics Corporation 3A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator ISL8013IRZ

The ISL8013 is a high efficiency, monolithic, synchronous step-down DC/DC converter that can deliver up to 3A continuous output current from a 2.7V 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.brbr The ISL8013 integrates a pair of low ON-resistance P-Channel and N-Channel internal MOSFETs to maximize efficiency and minimize external component count. The 100% duty-cycle operation allows less than 300mV dropout voltage at 3A output current. High 1MHz pulse-width modulation (PWM) switching frequency allows the use of small external components and SYNC input enables multiple ICs to synchronize out of phase to reduce ripple and eliminate beat frequencies.brbr The ISL8013 can be configured for discontinuous or forced continuous operation at light load. Forced continuous operation reduces noise and RF interference while discontinuous mode provides high efficiency by reducing switching losses at light loads.brbr Fault protection is provided by internal hiccup mode current limiting during short circuit and overcurrent conditions, an output over voltage comparator and over-temperature monitor circuit. A power good output voltage monitor indicates when the output is in regulation.brbr The ISL8013 is offered in a space saving 4x4 QFN lead free package with exposed pad lead frames for low thermal resistance.brbr The ISL8013 includes a pair of low ON-resistance P-Channel and N-Channel internal MOSFETs to maximize efficiency and minimize external component count. The 100% duty-cycle operation allows less than 300mV dropout voltage at 3A.brbr The ISL8013 offers a 1ms Power Good (PG) timer at power-up. When shutdown, ISL8013 discharges the output capacitor. Other features include internal soft-start, internal compensation, overcurrent

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