LT1529

PRODUCTION

3A Low Dropout Regulators with Micropower Quiescent Current and Shutdown

Part Models: 23
1ku List Price: Starting From $3.69

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Overview

Dropout Voltage: 0.6V at I_OUT = 3A
Output Current: 3A
Quiescent Current: 50µA
No Protection Diodes Needed
Adjustable Output from 3.8V to 14V
3.3V and 5V Fixed Output Voltages
Controlled Quiescent Current in Dropout
Shutdown I_Q = 16µA
Stable with 22µF Output Capacitor
Reverse Battery Protection
No Reverse Current
Thermal Limiting

The LT1529/LT1529-3.3/LT1529-5 are 3A low dropout regulators with micropower quiescent current and shutdown. The devices are capable of supplying 3A of output current with a dropout voltage of 0.6V. Designed for use in battery-powered systems, the low quiescent current, 50µA operating and 16µA in shutdown, make them an ideal choice. The quiescent current is well controlled; it does not rise in dropout as it does with many other low dropout PNP regulators.

Other features of the LT1529 /LT1529-3.3/LT1529-5 include the ability to operate with small output capacitors. They are stable with 22µF on the output while most older devices require up to 100µF for stability. Small ceramic capacitors can be used, enhancing manufacturabiltiy. Also the input may be connected to voltages lower than the output voltage, including negative voltages, without reverse current flow from output to input. This makes the LT1529/LT1529-3.3/LT1529-5 ideal for backup power situations where the output is held high and the input is at ground or reversed. Under these conditions, only 16µA will flow from the OUTPUT pin to ground. The devices are available in 5-lead TO-220 and 5-lead DD packages.

Applications

High Efficiency Regulator
Regulator for Battery-Powered Systems
Post Regulator for Switching Supplies
5V to 3.3V Logic Regulator

Part Models: 23
1ku List Price: Starting From $3.69

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
LT1529CQ#PBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529CQ#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529CQ-3.3#PBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529CQ-3.3#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529CQ-5#PBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529CQ-5#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529CT#06PBF	5-Lead TO-220 (Flow 06)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529CT#PBF	5-Lead TO-220	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529CT-3.3#06PBF	5-Lead TO-220 (Flow 06)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529CT-3.3#PBF	5-Lead TO-220	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529CT-5#06PBF	5-Lead TO-220 (Flow 06)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529CT-5#30PBF	5-Lead TO-220 (Flow 30)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529CT-5#PBF	5-Lead TO-220	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529IQ#PBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529IQ#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529IQ-3.3#PBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529IQ-3.3#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529IQ-5#PBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529IQ-5#TRPBF	5-Lead DD Pak	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529IT#06PBF	5-Lead TO-220 (Flow 06)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529IT#PBF	5-Lead TO-220	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529IT-3.3#PBF	5-Lead TO-220	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1529IT-5#PBF	5-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
LT1529CQ#PBF	PRODUCTION
LT1529CQ#TRPBF	PRODUCTION
LT1529CQ-3.3#PBF	PRODUCTION
LT1529CQ-3.3#TRPBF	PRODUCTION
LT1529CQ-5#PBF	PRODUCTION
LT1529CQ-5#TRPBF	PRODUCTION
LT1529CT#06PBF	PRODUCTION
LT1529CT#PBF	PRODUCTION
LT1529CT-3.3#06PBF	PRODUCTION
LT1529CT-3.3#PBF	PRODUCTION
LT1529CT-5#06PBF	PRODUCTION
LT1529CT-5#30PBF	PRODUCTION
LT1529CT-5#PBF	PRODUCTION
LT1529IQ#PBF	PRODUCTION
LT1529IQ#TRPBF	PRODUCTION
LT1529IQ-3.3#PBF	PRODUCTION
LT1529IQ-3.3#TRPBF	PRODUCTION
LT1529IQ-5#PBF	PRODUCTION
LT1529IQ-5#TRPBF	PRODUCTION
LT1529IT#06PBF	PRODUCTION
LT1529IT#PBF	PRODUCTION
LT1529IT-3.3#PBF	PRODUCTION
LT1529IT-5#PBF	PRODUCTION

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
LT1764	PRODUCTION	3A, Fast Transient Response, Low Noise, LDO Regulators

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LT1529
LT1529-3.3
LT1529-5

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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LT1529

Overview

Documentation

Data Sheet 1

Reliability Data 1

Technical Articles 1

Solutions Bulletin & Brochure 1