2A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator
●The ISL8012 is a high efficiency, monolithic, synchronous step-down DC/DC converter that can deliver up to 2A 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.
●The ISL8012 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 240mV dropout voltage at 2A output current. High 1MHz pulse-width modulation (PWM) switching frequency allows the use of small external components.
●Features
●• High Efficiency Synchronous Buck Regulator with up to 95% Efficiency
●• Power-Good (PG) Output with a 1ms Delay
●• 2.7V to 5.5V Supply Voltage
●• 3% Output Accuracy Over-Temperature/Load/Line
●• 2A Guaranteed Output Current
●• Start-up with Pre-Biased Output
●• Internal Soft-Start - 1ms
●• Soft-Stop Output Discharge During Disabled
●• 40µA Quiescent Supply Current in PFM Mode
●• Selectable Forced PWM Mode and PFM Mode
●• 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 10 Ld 3mmx3mm DFN
●• 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
●• Bar Code Readers
