Datasheet Linear Technology LT8610ACIMSE#TRPBF

LT8610AC/LT8610AC-1
42V, 3.5A Synchronous
Step-Down Regulator with
2.5µA Quiescent Current
Features Description LT8610 Feature Set, Plus: 3V Minimum Input Voltage 800mV Feedback Voltage 3.5A Maximum Output Current Fast 30ns Minimum Switch-On Time Improved Burst Mode Efficiency Improved EMI
n Wide Input Voltage Range: 3V to 42V
n Ultralow Quiescent Current Burst Mode® Operation: 2.5μA IQ Regulating 12VIN to 3.3VOUT
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:
LT8610AC: 200kHz to 2.2MHz LT8610AC-1: 1.5MHz to 2.2MHz
n Accurate 1.015V Enable Pin Threshold
n Output Soft-Start and Tracking
n Small Thermally Enhanced 16-Lead MSOP Package The LT®8610AC/LT8610AC-1 is a compact, high efficiency,
high speed synchronous monolithic step-down switching
regulator that consumes only 2.5µA of quiescent current.
Compared to the LT8610AB, the LT8610AC/LT8610AC-1
has a lower feedback voltage of 800mV and a lower minimum VIN of 3V. The LT8610AC/LT8610AC-1 has the same
additional features of the LT8610AB as compared to the
LT8610: higher maximum output current of 3.5A, faster
minimum on time of 30ns, and higher light load efficiency. n The LT8610AC/LT8610AC-1 has a SYNC pin for synchronization to an external clock. A capacitor on the TR/
SS pin programs the output voltage ramp rate during …