LT1764A

RECOMMENDED FOR NEW DESIGNS

3A, Fast Transient Response, Low Noise, LDO Regulators

Part Models: 33
1ku List Price: Starting From $4.27

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Overview

Optimized for Fast Transient Response
Output Current: 3A
Dropout Voltage: 340mV at 3A
Low Noise: 40µV_RMS (10Hz to 100kHz)
1mA Quiescent Current
Wide Input Voltage Range: 2.7V to 20V
No Protection Diodes Needed

Controlled Quiescent Current in Dropout
Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V
Adjustable Output from 1.21V to 20V
<1µA Quiescent Current in Shutdown
Stable with 10µF Output Capacitor
Reverse Battery Protection
No Reverse Current
Thermal Limiting

The LT1764A is a low dropout regulator optimized for fast transient response. The device is capable of supplying 3A of output current with a dropout voltage of 340mV. Operating quiescent current is 1mA, dropping to <1µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators. In addition to fast transient response, the LT1764A has very low output voltage noise which makes the device ideal for sensitive RF supply applications.

Output voltage range is from 1.21V to 20V. The LT1764A regulators are stable with output capacitors as low as 10µF. Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting and reverse current protection. The device is available in fixed output voltages of 1.5V, 1.8V, 2.5V, 3.3V and as an adjustable device with a 1.21V reference voltage. The LT1764A regulators are available in 5-lead TO-220 and DD packages, and 16-lead FE packages.


	Features
LT1764	-
LT1764A	Stable With Ceramic Output Capacitors

Applications

3.3V to 2.5V Logic Power Supply
Post Regulator for Switching Supplies

Part Models: 33
1ku List Price: Starting From $4.27

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
LT1764AEFE#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEFE#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEFE-1.5#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEFE-1.5#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEFE-1.8#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEFE-1.8#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEFE-2.5#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEFE-2.5#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEFE-3.3#PBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEFE-3.3#TRPBF	16-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEQ#PBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEQ#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEQ-1.5#PBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEQ-1.5#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEQ-1.8#PBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEQ-1.8#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEQ-2.5#PBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEQ-2.5#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEQ-3.3#PBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AEQ-3.3#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AET#06PBF	5-Lead TO-220 (Flow 06)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AET#30PBF	5-Lead TO-220 (Flow 30)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AET#31PBF	5-Lead TO-220 (Flow 31)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AET#PBF	5-Lead TO-220	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AET-1.5#PBF	5-Lead TO-220	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AET-1.8#30PBF	5-Lead TO-220 (Flow 30)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AET-1.8#PBF	5-Lead TO-220	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AET-2.5#06PBF	5-Lead TO-220 (Flow 06)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AET-2.5#PBF	5-Lead TO-220	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AET-3.3#06PBF	5-Lead TO-220 (Flow 06)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AET-3.3#PBF	5-Lead TO-220	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AMPQ#PBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1764AMPQ#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL
		PCN22_0068_Form Material_Report Delta Qualification Matrix
LT1764AEFE#PBF	PRODUCTION
LT1764AEFE#TRPBF	PRODUCTION
LT1764AEFE-1.5#PBF	PRODUCTION
LT1764AEFE-1.5#TRPBF	PRODUCTION
LT1764AEFE-1.8#PBF	PRODUCTION
LT1764AEFE-1.8#TRPBF	PRODUCTION
LT1764AEFE-2.5#PBF	PRODUCTION
LT1764AEFE-2.5#TRPBF	PRODUCTION
LT1764AEFE-3.3#PBF	PRODUCTION
LT1764AEFE-3.3#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
		PCN22_0175_Form Material_Report Delta Qualification Matrix
LT1764AEQ#PBF	PRODUCTION
LT1764AEQ#TRPBF	PRODUCTION
LT1764AEQ-1.5#PBF	PRODUCTION
LT1764AEQ-1.5#TRPBF	PRODUCTION
LT1764AEQ-1.8#PBF	PRODUCTION
LT1764AEQ-1.8#TRPBF	PRODUCTION
LT1764AEQ-2.5#PBF	PRODUCTION
LT1764AEQ-2.5#TRPBF	PRODUCTION
LT1764AEQ-3.3#PBF	PRODUCTION
LT1764AEQ-3.3#TRPBF	PRODUCTION
LT1764AET#06PBF	PRODUCTION
LT1764AET#30PBF	PRODUCTION
LT1764AET#31PBF	PRODUCTION
LT1764AET#PBF	PRODUCTION
LT1764AET-1.5#PBF	PRODUCTION
LT1764AET-1.8#30PBF	PRODUCTION
LT1764AET-1.8#PBF	PRODUCTION
LT1764AET-2.5#06PBF	PRODUCTION
LT1764AET-2.5#PBF	PRODUCTION
LT1764AET-3.3#06PBF	PRODUCTION
LT1764AET-3.3#PBF	PRODUCTION
LT1764AMPQ#PBF	PRODUCTION
LT1764AMPQ#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

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Hardware Ecosystem

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Power System Management (PSM) & Sequencers 1
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Parts	Product Life Cycle	Description
LT3083	RECOMMENDED FOR NEW DESIGNS	Adjustable 3A Single Resistor Low Dropout Regulator

Tools & Simulations

LTspice 1

LT1764A Demo Circuit - Fast Transient Response, Low Noise LDO Regulator (10V to 5V@2A)

Models for the following parts are available in LTspice:

LT1764
LT1764-1.5
LT1764-1.8
LT1764-2.5
LT1764-3.3
LT1764A
LT1764A-1.5
LT1764A-1.8
LT1764A-2.5
LT1764A-3.3

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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LT1764A

Overview

Documentation

Data Sheet 1

Reliability Data 1

Technical Articles 1

Solutions Bulletin & Brochure 1