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