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reference designLT8330

Analog Devices LT8330

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

Overview

TopologyPositive to Negative Converter
Input voltage4-16 V
Switching frequency1850-2150 kHz
Output 1-5 V / 0.28 A
Output 2-5 V / 0.3 A
Output 3-5 V / 0.38 A

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
  • Medical Diagnostic Equipment
  • Industrial and Automotive

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
74489430027
WE-TDC SMT Shielded Coupled Inductor, 2.7 µH, 2.7 µH
Simu­lation
Downloads10 files

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CAD files ZIP

Electric models ZIP

Download all 10 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 12.7 µH
Inductance 22.7 µH
Turns Ratio1:1 
Rated Current1.85 A
Rated Current 21.85 A
Saturation Current3 A
Saturation Current 13 A
Saturation Current 23 A
DC Resistance 169.5 mΩ
DC Resistance 269.5 mΩ
DC Resistance 180.5 mΩ
DC Resistance 280.5 mΩ
Self Resonant Frequency [1]65 MHz