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reference designLT8618

Analog Devices LT8618

High Efficiency 65V/100mA Synchronous Buck

Overview

TopologyBuck Converter
Input voltage23-60 V
Switching frequency200-2200 kHz
Output 112 V / 0.1 A

Description

The LT®8618 is a compact, high speed synchronous monolithic step-down switching regulator that delivers up to 100mA with high efficiency at constant switching frequency, even up to 2.2MHz. It accepts a wide input voltage range up to 65V (transients only, 60V for continuous operation), and consumes only 2.5μA of quiescent current.

Features

  • High Efficiency Synchronous Operation

  • 90% Efficiency at 30mA, 12VIN to 3.3VOUT

  • Ultralow Quiescent Current Burst Mode® Operation
  • < 2.5μA IQ Regulating 48VIN to 3.3VOUT
  • Output Ripple < 10mVP-P
  • 3.4V to 60V Input Operation Range (65V Max)
  • Fast Minimum Switch-On Time: 35ns
  • Adjustable Switching Frequency: 200kHz to 2.2MHz
  • Fixed 3.3V Output Voltage Version
  • Allows Tiny Inductors
  • Accurate 1V Enable Pin Threshold
  • Internal Compensation
  • Output Soft-Start and Tracking
  • Small 10-Lead 3mm . 2mm DFN
  • AEC-Q100 Qualification in Progress

Typical applications

  • Industrial Sensors, Industrial Internet of Things, Flow Meters
  • 4mA to 20mA Current Loops, Automotive Housekeeping Supplies

More information

Products

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Data­sheet
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Product series
L(µH)
IR(A)
ISAT(A)
RDC(mΩ)
fres(MHz)
SamplesAvailability & Sample
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74404042221
SPECWE-LQS SMT Power Inductor, 220 µH, 0.25 A
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LQS SMT Power Inductor
Inductance220 µH
Rated Current0.25 A
Saturation Current0.39 A
DC Resistance3450 mΩ
Self Resonant Frequency5.3 MHz
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