LT1072
PRODUCTION1.25A High Efficiency Switching Regulator
- Part Models
- 11
- 1ku List Price
- Starting From $3.99
Overview
- Available in MiniDIP, TO-220, and TO-3 Packages
- Wide Input Voltage Range: 3V to 60V
- Low Quiescent Current: 6mA
- Internal 1.25A Switch
- Very Few External Parts Required
- Self-Protected Against Overloads
- Operates in Nearly All Switching Topologies
- Shutdown Mode Draws Only 50µA Supply Current
- Flyback-Regulated Mode has Fully Floating Outputs
- Can be Externally Synchronized
The LT®1072 is a monolithic high power switching regulator. It can be operated in all standard switching configurations including buck, boost, flyback, forward, inverting and “Cuk”. A high current, high efficiency switch is included on the die along with all oscillator, control, and protection circuitry. Integration of all functions allows the LT1072 to be built in a standard 5-pin TO-3 or TO-220 power package as well as the 8-pin miniDlP. This makes it extremely easy to use and provides "bustproof" operation similar to that obtained with 3-pin linear regulators.
The LT1072 operates with supply voltages from 3V to 60V, and draws only 6mA quiescent current. It can deliver load power up to 20 watts with no external power devices. By utilizing current-mode switching techniques, it provides excellent AC and DC load and line regulation.
The LT1072 has many unique features not found even on the vastly more difficult to use low power control chips presently available. It uses an adaptive anti-sat switch drive to allow very wide ranging load currents with no loss in efficiency. An externally activated shutdown mode reduces total supply current to 50µA typical for standby operation. Totally isolated and regulated outputs can be generated by using the optional “flyback regulation mode” built into the LT1072, without the need for optocouplers or extra transformer windings.
Applications
- Logic Supply 5V at 2.5A
- 5V Logic to ±15V Op Amp Supply
- Offline Converter up to 50W
- Battery Upconverter
- Power Inverter (+ to -) or (- to +)
- Fully Floating Multiple Outputs
- Driver for High Current Supplies
Documentation
Data Sheet 1
Application Note 7
Design Note 5
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 |
|---|---|---|---|
| LT1072CN8#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1072CS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1072CS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1072CSW#PBF | 16-Lead SOIC (Wide 0.3 Inch) | ||
| LT1072CSW#TRPBF | 16-Lead SOIC (Wide 0.3 Inch) | ||
| LT1072CT#06PBF | 5-Lead TO-220 (Flow 06) | ||
| LT1072CT#PBF | 5-Lead TO-220 | ||
| LT1072HVCT#PBF | 5-Lead TO-220 | ||
| LT1072HVIT#PBF | 5-Lead TO-220 | ||
| LT1072IN8#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1072IT#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 |
||
| LT1072CN8#PBF | PRODUCTION | |
| LT1072IN8#PBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0241 Epoxy Change from Henkel 8290 to 8290A for PDIP Package |
||
| LT1072CN8#PBF | PRODUCTION | |
| LT1072IN8#PBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0172 Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG] |
||
| LT1072CN8#PBF | PRODUCTION | |
| LT1072IN8#PBF | PRODUCTION | |
|
Oct 8, 2024 - 24_0236 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LT1072CS8#PBF | PRODUCTION | |
| LT1072CS8#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0254 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2) |
||
| LT1072CS8#PBF | PRODUCTION | |
| LT1072CS8#TRPBF | PRODUCTION | |
|
Jun 11, 2021 - 21_0060 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LT1072CS8#PBF | PRODUCTION | |
| LT1072CS8#TRPBF | PRODUCTION | |
|
Aug 10, 2022 - 22_0176 Laser Top Mark Conversion for SOIC_W Packages Assembled in ADPG [PNG] and UTL |
||
| LT1072CSW#PBF | PRODUCTION | |
| LT1072CSW#TRPBF | 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 |
||
| LT1072CT#06PBF | PRODUCTION | |
| LT1072CT#PBF | PRODUCTION | |
| LT1072HVCT#PBF | PRODUCTION | |
| LT1072HVIT#PBF | PRODUCTION | |
| LT1072IT#PBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice 1
Models for the following parts are available in LTspice:
- LT1072
- LT1072HV
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.