Datasheet Linear Technology LT8610AEMSE#PBF

LT8610A/LT8610AB Series
42V, 3.5A Synchronous
Step-Down Regulator with
2.5µA Quiescent Current
FEATURES DESCRIPTION LT8610 Feature Set, Plus: 3.5A Maximum Output Current Fast 30ns Minimum Switch-On Time Improved Burst Mode Efficiency (LT8610AB Only) Improved EMI
n Wide Input Voltage Range: 3.4V to 42V
n Ultralow Quiescent Current Burst Mode® Operation: 2.5μA IQ Regulating 12VIN to 3.3VOUT
n Fixed Output Voltages: 3.3V, 5V
n Output Ripple < 10mV
P-P (LT8610A Only)
n High Efficiency Synchronous Operation: 95% Efficiency at 1A, 5VOUT from 12VIN 93% Efficiency at 1A, 3.3VOUT from 12VIN
n Low Dropout Under All Conditions: 200mV at 1A
n Safely Tolerates Inductor Saturation in Overload
n Adjustable and Synchronizable Frequency:
200kHz to 2.2MHz
n Accurate 1V Enable Pin Threshold
n Output Soft-Start and Tracking
n Small Thermally Enhanced 16-Lead MSOP Package The LT®8610A/LT8610AB series are compact, high efficiency, high speed synchronous monolithic step-down
switching regulators that consume only 2.5µA of quiescent current. Compared to the LT8610, they have higher
maximum output currents of 3.5A and a faster minimum
switch-on time of 30ns. The LT8610A has the same low
ripple burst mode performance of the LT8610, while the
LT8610AB has even higher light load efficiency. n APPLICATIONS The other features of the LT8610 remain unchanged in the …