DATASHEET
ISL8012
2A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator FN6616
Rev 2.00
December 1, 2011 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. Features 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. 3% Output Accuracy Over-Temperature/Load/Line The ISL8012 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. 40ВµA Quiescent Supply Current in PFM Mode Fault protection is provided by internal current limiting during
short circuit and overcurrent conditions, an output overvoltage
comparator and over-temperature monitor circuit. A powergood output voltage monitor indicates when the output is in
regulation. …
