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