LT1082
PRODUCTION1A High Voltage, Efficiency Switching Voltage Regulator
- Part Models
- 10
- 1ku List Price
- Starting From $8.21
Overview
- 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
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
Documentation
Data Sheet 1
User Guide 1
Application Note 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT1082CN8#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1082CQ#PBF | 5-Lead DD Pak | ||
| LT1082CQ#TRPBF | 5-Lead DD Pak | ||
| LT1082CT#06PBF | 5-Lead TO-220 (Flow 06) | ||
| LT1082CT#PBF | 5-Lead TO-220 | ||
| LT1082IN8#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1082IQ#PBF | 5-Lead DD Pak | ||
| LT1082IQ#TRPBF | 5-Lead DD Pak | ||
| LT1082IT#30PBF | 5-Lead TO-220 (Flow 30) | ||
| LT1082IT#PBF | 5-Lead TO-220 |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 8, 2024 - 24_0234 Migrating Bottom Trace Code Marking to Top Side Laser Marking for PDIP Package |
||
| LT1082CN8#PBF | PRODUCTION | |
| LT1082IN8#PBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0241 Epoxy Change from Henkel 8290 to 8290A for PDIP Package |
||
| LT1082CN8#PBF | PRODUCTION | |
| LT1082IN8#PBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0172 Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG] |
||
| LT1082CN8#PBF | PRODUCTION | |
| LT1082IN8#PBF | PRODUCTION | |
|
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 | PRODUCTION | |
| LT1082CQ#TRPBF | PRODUCTION | |
| LT1082CT#06PBF | PRODUCTION | |
| LT1082CT#PBF | PRODUCTION | |
| LT1082IQ#PBF | PRODUCTION | |
| LT1082IQ#TRPBF | PRODUCTION | |
| LT1082IT#30PBF | PRODUCTION | |
| LT1082IT#PBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- LT1082
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.
Evaluation Kits
LT1339CSW/LT1082CQ | Buck Controller, 4.5V to 60VIN, 3.3V/5V/7V/ 12VOUT @ 3Amp (thru-hole caps)