LT8604 - Analog Devices

LT8604 High Efficiency 42V/120mA Synchronous Buck

The LT®8604/LT8604C is a compact, high speed synchronous monolithic step-down switching regulator that delivers up to 120mA to the output with high efficiency at a constant frequency, even up to 2.2MHz. It accepts a wide input voltage range up to 42V and consumes only 2.5µA of quiescent current when operating in Burst Mode. Top and bottom power switches are.

Features

n High Efficiency 2MHz Synchronous Operation n > 90% Efficiency at 50mA, 12VIN to 5VOUT n Pin Selectable Forced Continuous or Burst Mode® Operation (LT8604C Only) n Ultralow Quiescent Current Burst Mode Operation n < 2.5µA IQ Regulating 24VIN to 3.3VOUT n Output Ripple < 10mVP-P n Wide Input Voltage Range: 3.2V to 42V n Fast Minimum Switch-On Time: 35ns n Adjustable (All) and Synchronizable (LT8604C Only) Switching Frequency: 200kHz to 2.2MHz n Accurate 1V Enable Pin Threshold (All) with Adjustable Hysteresis (LT8604C Only) n Internal Compensation n Output Soft-Start and Tracking n Small 12-Le.