LT1082
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LT1082

1A High Voltage, Efficiency Switching Voltage Regulator

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Info: : PRODUCTION tooltip
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Part Details
Part Models 10
1ku List Price Starting From $6.49
Features
  • Wide Input Voltage Range: 3V to 75V
  • High Switch Voltage: 100V
  • Low Quiescent Current: 4.5mA
  • Internal 1A Switch
  • Shutdown Mode Draws Only 120µA Supply Current
  • Isolated Flyback Regulation Mode for Fully Floating Outputs
  • Can Be Externally Synchronized
  • Available in MiniDIP and TO-220 Packages
  • Same Pinout as LT1072
Additional Details
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The LT1082 is a monolithic high voltage switching regulator. It can be operated in all standard switching configurations including buck, boost, flyback, forward, and inverting. A 1A high efficiency switch is included on the die along with all oscillator, control, and protection circuitry.

The LT1082 operates with supply voltages from 3V to 75V, switch voltage up to 100V and draws only 4.5mA quiescent current. It can deliver load power up to 20W with no external power devices. By utilizing current-mode switching techniques, it provides excellent AC and DC load and line regulation.

An externally activated shutdown mode reduces total supply current to 120µA typical for standby operation. Totally isolated and regulated outputs can be generated by using the optional “isolated flyback regulation mode” built into the LT1082, without the need for optocouplers or extra transformer windings.

The LT1082 has a unique feature to provide high voltage short-circuit protection. When the FB pin is pulled down to 0.6V and the current out of the pin reaches approximately 350µA, the switching frequency will shift down from 60kHz to 12kHz.

Applications

  • Telecom 5V Supply at 0.7A from -48V
  • 90V Supply at 120mA from 15V
  • All Applications Using LT1072
Part Models 10
1ku List Price Starting From $6.49

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT1082CN8#PBF
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LT1082CQ#PBF
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LT1082CQ#TRPBF
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LT1082CT#06PBF
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LT1082CT#PBF
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LT1082IN8#PBF
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LT1082IQ#PBF
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LT1082IQ#TRPBF
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LT1082IT#30PBF
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LT1082IT#PBF
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0241

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

Aug 6, 2022

- 22_0172

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

Aug 10, 2022

- 22_0175

Laser Top Mark Conversion for DDPAK & TO220 Packages Assembled in ADPG. Country of Origin Code [MY] To Be Incorporated On Top Mark

LT1082CQ#PBF

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LT1082CQ#TRPBF

PRODUCTION

LT1082CT#06PBF

PRODUCTION

LT1082CT#PBF

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LT1082IQ#PBF

PRODUCTION

LT1082IQ#TRPBF

PRODUCTION

LT1082IT#30PBF

PRODUCTION

LT1082IT#PBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0241

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Epoxy Change from Henkel 8290 to 8290A for PDIP Package

Aug 6, 2022

- 22_0172

arrow down

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

Aug 10, 2022

- 22_0175

arrow down

Laser Top Mark Conversion for DDPAK & TO220 Packages Assembled in ADPG. Country of Origin Code [MY] To Be Incorporated On Top Mark

LT1082CQ#PBF

PRODUCTION

LT1082CQ#TRPBF

PRODUCTION

LT1082CT#06PBF

PRODUCTION

LT1082CT#PBF

PRODUCTION

LT1082IQ#PBF

PRODUCTION

LT1082IQ#TRPBF

PRODUCTION

LT1082IT#30PBF

PRODUCTION

LT1082IT#PBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC224A

LT1339CSW/LT1082CQ | Buck Controller, 4.5V to 60VIN, 3.3V/5V/7V/ 12VOUT @ 3Amp (thru-hole caps)

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DC224A

LT1339CSW/LT1082CQ | Buck Controller, 4.5V to 60VIN, 3.3V/5V/7V/ 12VOUT @ 3Amp (thru-hole caps)

LT1339CSW/LT1082CQ | Buck Controller, 4.5V to 60VIN, 3.3V/5V/7V/ 12VOUT @ 3Amp (thru-hole caps)

Product Detail

Demonstration circuit DC224A is a multipurpose, 3 amp synchronous step-down switching regulator using the LT1339. The input voltage range is 4.5V to 60V. The output voltage is jumper selectable for 3.3V, 5V, 7V or 12V. The board includes a small SEPIC converter based on the LT1082 that provides 12V for the LT1339 with any input voltage of 4V to 60V. 

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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