IC manufacturers Analog Devices

IC manufacturers (103)

Analog Devices LT8300

100VIN Micropower Isolated Flyback Converter with 150V/260mA Switch

Overview

TopologyFlyback Converter
Input voltage12-48 V
Switching frequency720-780 kHz
Output 13.3 V / 0.51 A
Output 224 V / 0.07 A
Output 312 V / 0.13 A
Output 415 V / 0.12 A
Output 55 V / 0.38 A
IC revisionA

Description

The LT8300 is a micropower high voltage isolated flyback converter. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or opto-isolator for regulation. The output voltage is programmed with a single external resistor. Internal compensation and soft-start further reduce external component count. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple Burst Mode operation maintains high efficiency at light load while minimizing the output voltage ripple. A 260mA, 150V DMOS power switch is integrated along with all high voltage circuitry and control logic into a 5-lead ThinSOT™ package.The LT8300 operates from an input voltages range of 6V to 100V and can deliver up to 2W of isolated output power. The high level of integration and the use of boundary and low ripple burst modes result in a simple to use, low component count, and high efficiency application solution for isolated power delivery.

Features

  • 6V to 100V Input Voltage Range
  • 260mA, 150V Internal DMOS Power Switch
  • Low Quiescent Current-70µA in Sleep Mode-330µA in Active Mode
  • Boundary Mode Operation at Heavy Load
  • Low-Ripple Burst Mode® Operation at Light Load
  • Minimum Load <0.5% (Typ) of Full Output
  • VOUT Set with a Single External Resistor
  • No Transformer Third Winding or Opto-Isolator Required for Regulation
  • Accurate EN/UVLO Threshold and Hysteresis
  • Internal Compensation and Soft-Start
  • 5-Lead TSOT-23 Package
  • AEC-Q100 Qualified for Automotive Applications

Typical applications

  • Automotive
  • Industrial
  • Isolated Auxiliary/Housekeeping Power Supplies, Medical power supplies
  • Isolated Telecom

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
VIN
VOut1(V)
IOut1(mA)
VOut2(V)
IOut2(mA)
Vaux(V)
L(µH)
n
ISAT(A)
LS(µH)
VT(V (AC))
Size
IC Reference
SamplesAvailability & Sample
SPECWE-FLYLT Flyback Transformers for Linear Technology, 22 - 72 V (DC), 3.3 V
Simu­lation
Availability
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 22 - 72 V (DC)
Output Voltage 13.3 V
Output Current 1500 mA
Inductance300 µH
Turns Ratio8.4:1 
Saturation Current0.45 A
Leakage Inductance4 µH
Insulation Test Voltage1500 V (AC)
SizeEP7 
IC ReferenceLT8300 
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SPECWE-FLYLT Flyback Transformers for Linear Technology, 30 - 72 V (DC), 12 V
Simu­lation
Availability
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 30 - 72 V (DC)
Output Voltage 112 V
Output Current 1300 mA
Inductance300 µH
Turns Ratio4:1 
Saturation Current0.6 A
Leakage Inductance4 µH
Insulation Test Voltage1500 V (AC)
SizeEP7 
IC ReferenceLT8300 
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SPECWE-FLYLT Flyback Transformers for Linear Technology, 35 - 75 V (DC), 3.3 V
Simu­lation
Availability
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 35 - 75 V (DC)
Output Voltage 13.3 V
Output Current 1600 mA
Auxiliary Voltage6.6 V
Inductance400 µH
Turns Ratio6:1:2 
Saturation Current0.75 A
Leakage Inductance8 µH
Insulation Test Voltage1500 V (AC)
SizeEP7 
IC ReferenceLT8300 
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SPECWE-FLYLT Flyback Transformers for Linear Technology, 35 - 75 V (DC), 5 V
Simu­lation
Availability
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 35 - 75 V (DC)
Output Voltage 15 V
Output Current 1400 mA
Auxiliary Voltage5 V
Inductance300 µH
Turns Ratio4:1:1 
Saturation Current0.5 A
Leakage Inductance3 µH
Insulation Test Voltage1500 V (AC)
SizeEP7 
IC ReferenceLT8300 
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SPECWE-FLYLT Flyback Transformers for Linear Technology, 36 - 72 V (DC), 5 V
Simu­lation
Availability
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 36 - 72 V (DC)
Output Voltage 15 V
Output Current 1380 mA
Inductance300 µH
Turns Ratio6:1 
Saturation Current0.45 A
Leakage Inductance5 µH
Insulation Test Voltage1500 V (AC)
SizeEP7 
IC ReferenceLT8300 
Check availability
SPECWE-FLYLT Flyback Transformers for Linear Technology, 36 - 72 V (DC), 12 V
Simu­lation
Availability
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 36 - 72 V (DC)
Output Voltage 112 V
Output Current 170 mA
Output Voltage 212 V
Output Current 270 mA
Inductance300 µH
Turns Ratio2:1:1 
Saturation Current0.54 A
Leakage Inductance4 µH
Insulation Test Voltage1500 V (AC)
SizeEP7 
IC ReferenceLT8300 
Check availability
SPECWE-FLYLT Flyback Transformers for Linear Technology, 36 - 72 V (DC), 24 V
Simu­lation
Availability
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 36 - 72 V (DC)
Output Voltage 124 V
Output Current 170 mA
Inductance300 µH
Turns Ratio1:1 
Saturation Current0.45 A
Leakage Inductance4 µH
Insulation Test Voltage1500 V (AC)
SizeEP7 
IC ReferenceLT8300 
Check availability
SPECWE-FLYLT Flyback Transformers for Linear Technology, 36 - 72 V (DC), 24 V
Simu­lation
Availability
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 36 - 72 V (DC)
Output Voltage 124 V
Output Current 180 mA
Auxiliary Voltage5 V
Inductance300 µH
Turns Ratio5:5:1 
Saturation Current0.56 A
Leakage Inductance3 µH
Insulation Test Voltage1500 V (AC)
SizeEP7 
IC ReferenceLT8300 
Check availability
SPECWE-FLYLT Flyback Transformers for Linear Technology, 36 - 72 V (DC), 15 V
Simu­lation
Availability
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 36 - 72 V (DC)
Output Voltage 115 V
Output Current 1140 mA
Auxiliary Voltage5 V
Inductance350 µH
Turns Ratio6:3:1 
Saturation Current0.52 A
Leakage Inductance4.5 µH
Insulation Test Voltage1500 V (AC)
SizeEP7 
IC ReferenceLT8300 
Check availability
SPECWE-FLYLT Flyback Transformers for Linear Technology, 36 - 72 V (DC), 15 V
Simu­lation
Availability
Status Activei| Production is active. Expected lifetime: >10 years.
Input Voltage 36 - 72 V (DC)
Output Voltage 115 V
Output Current 170 mA
Output Voltage 215 V
Output Current 270 mA
Inductance350 µH
Turns Ratio2:1:1 
Saturation Current0.52 A
Leakage Inductance4.5 µH
Insulation Test Voltage1500 V (AC)
SizeEP7 
IC ReferenceLT8300 
Check availability