DATASHEET
ISL78213 FN7550
Rev 3.00
May 12, 2015 3A Low Quiescent Current, High Efficiency Synchronous Buck Regulator
The ISL78213 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 The ISL78213 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 300mV dropout voltage at 3A
output current. High 1MHz Pulse-Width Modulation (PWM)
switching frequency, that can be synchronized 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 ISL78213 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. External synchronization up to 4MHz Fault protection is provided by internal hiccup mode current
limiting during short circuit and overcurrent conditions, an …
