LT1371

PRODUCTION

500kHz High Efficiency 3A Switching Regulator

Part Models: 20
1ku List Price: Starting From $6.33

Viewing:

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

Part Models: 20
1ku List Price: Starting From $6.33

Documentation

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	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371CR#TRPBF	7-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371CSW#PBF	20-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371CSW#TRPBF	20-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371CT7#PBF	7-Lead TO-220	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371HVCR#PBF	7-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371HVCR#TRPBF	7-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371HVCSW#PBF	20-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371HVCSW#TRPBF	20-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371HVCT7#PBF	7-Lead TO-220	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371HVIR#PBF	7-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371HVIR#TRPBF	7-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371HVISW#PBF	20-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371HVISW#TRPBF	20-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371HVIT7#PBF	7-Lead TO-220	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371IR#PBF	7-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371IR#TRPBF	7-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371ISW#PBF	20-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371ISW#TRPBF	20-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1371IT7#PBF	7-Lead TO-220	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

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
		PCN22_0175_Form Material_Report Delta Qualification Matrix
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
		PCN22_0176_Form Material_Report Delta Qualification Matrix
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

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts	Product Life Cycle	Description
Oscillators 2
LTC6908		Resistor Set SOT-23 Oscillator with Spread Spectrum Modulation
LTC6909	PRODUCTION	1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation

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.