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reference designLT8330

Analog Devices LT8330

Low IQ Boost/SEPIC/Inverting Converter with 1A, 60V Switch

Overview

TopologySEPIC Buck-Boost Topology
Input voltage8-30 V
Switching frequency1850-2150 kHz
Output 124 V / 0.25 A
Output 224 V / 0.2 A
Output 324 V / 0.16 A
IC revision2016

Description

The LT®8330 is a current mode DC/DC converter capable of generating either positive or negative output voltages using a single feedback pin. It can be configured as a boost, SEPIC or inverting converter consuming as low as 6μA of quiescent current. Low ripple Burst Mode operation maintains high efficiency down to very low output currents while keeping the output ripple below 15mV in a typical application. The internally compensated current mode architecture results in stable operation over a wide range of input and output voltages. Integrated soft-start and frequency foldback functions are included to control inductor current during start-up. The 2MHz operation combined with small package options, enables low cost, area efficient solutions.

Features

  • 3V to 40V Input Voltage Range
  • Ultralow Quiescent Current and Low Ripple Burst Mode® Operation: IQ = 6μA
  • 1A, 60V Power Switch
  • Positive or Negative Output Voltage Programming with a Single Feedback Pin
  • Fixed 2MHz Switching Frequency
  • Accurate 1.6V EN/UVLO Pin Threshold
  • Internal Compensation and Soft-Start
  • Low Profile (1mm) ThinSOT™ Package
  • Low Profile (0.75mm) 8-Lead (3mm × 2mm) DFN Package

Remarks

  • L1=L2=6.8 are used refer page no-18

Typical applications

  • Telecom
  • Portable Electronics
  • Industrial and Automotive
  • Medical Diagnostic Equipment

More information

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L1(µH)
L2(µH)
n
IR(A)
IR 2(A)
ISAT(A)
ISAT1(A)
ISAT2(A)
RDC1 typ(mΩ)
RDC2 typ(mΩ)
RDC1 max(mΩ)
RDC2 max(mΩ)
fres 1(MHz)
Samples
74489440068
WE-TDC SMT Shielded Coupled Inductor, 6.8 µH, 6.8 µH
Simu­lation
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-TDC SMT Shielded Coupled Inductor
Inductance 16.8 µH
Inductance 26.8 µH
Turns Ratio1:1 
Rated Current1.45 A
Rated Current 21.45 A
Saturation Current3.2 A
Saturation Current 13.2 A
Saturation Current 23.2 A
DC Resistance 188 mΩ
DC Resistance 288 mΩ
DC Resistance 1100 mΩ
DC Resistance 2100 mΩ
Self Resonant Frequency [1]25 MHz