DATASHEET
ISL78214 FN7551
Rev 2.00
May 12, 2015 4A Low Quiescent Current High Efficiency Synchronous Buck Regulator
The ISL78214 is a high efficiency, monolithic, synchronous
step-down DC/DC converter that can deliver up to 4A
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 The ISL78214 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 400mV dropout voltage at 4A
output current. High 1MHz Pulse-width Modulation (PWM)
switching frequency, that can be synchronization up to 4MHz
with an external clock, 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. 2% output accuracy over-temperature/load/line The ISL78214 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. …
