LT1371
PRODUCTION500kHz High Efficiency 3A Switching Regulator
- Part Models
- 20
- 1ku List Price
- Starting From $8.01
Overview
- Faster Switching with Increased Efficiency
- Uses Small Inductors: 4.7µH
- All Surface Mount Components
- Low Minimum Supply Voltage: 2.7V
- Quiescent Current: 4mA Typ
- Current Limited Power Switch: 3A
- Regulates Positive or Negative Outputs
- Shutdown Supply Current: 12µA Typ
- Easy External Synchronization
The LT1371 is a monolithic high frequency current mode switching regulator. It can be operated in all standard switching configurations including boost, buck, flyback, forward, inverting and “Cuk”. A 3A high efficiency switch is included on the die, along with all oscillator, control and protection circuitry.
The LT1371 typically consumes only 4mA quiescent current and has higher efficiency than previous parts. High frequency switching allows for very small inductors to be used.
New design techniques increase flexibility and maintain ease of use. Switching is easily synchronized to an external logic level source. A logic low on the Shutdown pin reduces supply current to 12µA. Unique error amplifier circuitry can regulate positive or negative output voltage while maintaining simple frequency compensation techniques. Nonlinear error amplifier transconductance reduces output overshoot on start-up or overload recovery. Oscillator frequency shifting protects external components during overload conditions.
Applications
- Boost Regulators
- Laptop Computer Supplies
- Multiple Output Flyback Supplies
- Inverting Supplies
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Design Note 3
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 |
|---|---|---|---|
| LT1371CR#PBF | 7-Lead DD Pak | ||
| LT1371CR#TRPBF | 7-Lead DD Pak | ||
| LT1371CSW#PBF | 20-Lead SOIC (Wide 0.3 Inch) | ||
| LT1371CSW#TRPBF | 20-Lead SOIC (Wide 0.3 Inch) | ||
| LT1371CT7#PBF | 7-Lead TO-220 | ||
| LT1371HVCR#PBF | 7-Lead DD Pak | ||
| LT1371HVCR#TRPBF | 7-Lead DD Pak | ||
| LT1371HVCSW#PBF | 20-Lead SOIC (Wide 0.3 Inch) | ||
| LT1371HVCSW#TRPBF | 20-Lead SOIC (Wide 0.3 Inch) | ||
| LT1371HVCT7#PBF | 7-Lead TO-220 | ||
| LT1371HVIR#PBF | 7-Lead DD Pak | ||
| LT1371HVIR#TRPBF | 7-Lead DD Pak | ||
| LT1371HVISW#PBF | 20-Lead SOIC (Wide 0.3 Inch) | ||
| LT1371HVISW#TRPBF | 20-Lead SOIC (Wide 0.3 Inch) | ||
| LT1371HVIT7#PBF | 7-Lead TO-220 | ||
| LT1371IR#PBF | 7-Lead DD Pak | ||
| LT1371IR#TRPBF | 7-Lead DD Pak | ||
| LT1371ISW#PBF | 20-Lead SOIC (Wide 0.3 Inch) | ||
| LT1371ISW#TRPBF | 20-Lead SOIC (Wide 0.3 Inch) | ||
| LT1371IT7#PBF | 7-Lead TO-220 |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
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 |
||
| LT1371CR#PBF | PRODUCTION | |
| LT1371CR#TRPBF | PRODUCTION | |
| LT1371CT7#PBF | PRODUCTION | |
| LT1371HVCR#PBF | PRODUCTION | |
| LT1371HVCR#TRPBF | PRODUCTION | |
| LT1371HVCT7#PBF | PRODUCTION | |
| LT1371HVIR#PBF | PRODUCTION | |
| LT1371HVIR#TRPBF | PRODUCTION | |
| LT1371HVIT7#PBF | PRODUCTION | |
| LT1371IR#PBF | PRODUCTION | |
| LT1371IR#TRPBF | PRODUCTION | |
| LT1371IT7#PBF | PRODUCTION | |
|
Aug 10, 2022 - 22_0176 Laser Top Mark Conversion for SOIC_W Packages Assembled in ADPG [PNG] and UTL |
||
| LT1371CSW#PBF | PRODUCTION | |
| LT1371CSW#TRPBF | PRODUCTION | |
| LT1371HVCSW#PBF | PRODUCTION | |
| LT1371HVCSW#TRPBF | PRODUCTION | |
| LT1371HVISW#PBF | PRODUCTION | |
| LT1371HVISW#TRPBF | PRODUCTION | |
| LT1371ISW#PBF | PRODUCTION | |
| LT1371ISW#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LT1371
- LT1371HV
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
LT1371CR | 12V Output Boost Converter
Resources
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